diff --git a/judge/views/problem.py b/judge/views/problem.py
index 1035717..aa913d8 100644
--- a/judge/views/problem.py
+++ b/judge/views/problem.py
@@ -512,7 +512,7 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
 
     def get_org_query(self, query):
         if not self.profile:
-            return None
+            return []
         return [
             i
             for i in query
@@ -541,6 +541,7 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
             )
         if self.org_query:
             self.org_query = self.get_org_query(self.org_query)
+            print(self.org_query)
             queryset = queryset.filter(
                 Q(organizations__in=self.org_query)
                 | Q(contests__contest__organizations__in=self.org_query)
diff --git a/templates/problem/list-base.html b/templates/problem/list-base.html
index 2eabfe6..d97dc83 100644
--- a/templates/problem/list-base.html
+++ b/templates/problem/list-base.html
@@ -55,13 +55,6 @@
         <script src="{{ static('libs/nouislider.min.js') }}" type="text/javascript"></script>
         <script>
             $(function () {
-                {% if not request.in_contest_mode %}
-                    // wrap middle and write column
-                    if (window.matchMedia('(max-width: 799px)').matches) {
-                        $('.middle-content').next().addBack().wrapAll('<div class="problem-middle-right"/>');
-                    }
-                {% endif %}
-
                 var $form = $('form#filter-form');
                 var $search = $('#search');
                 var $category = $('#category');
@@ -233,7 +226,9 @@
 
                     {% if request.in_contest_mode %}
                         $('.left-sidebar').hide();
-                        $('.middle-content').css('max-width', '80%');
+                        if (window.matchMedia('(min-width: 800px)').matches) {
+                            $('.middle-content').css('max-width', '80%');
+                        }                        
                     {% endif %}
                 });
             </script>
@@ -251,195 +246,6 @@
     {% endif %}
 {% endblock %}
 
-{% block middle_content %}
-    {% if in_contest_mode or page_type == 'list' %}
-        <div id="content-left" class="problems">
-            <table id="problem-table" class="table striped">
-                <thead>
-                <tr>
-                    {% if request.in_contest_mode %}
-                        {% if request.user.is_authenticated %}
-                            <th class="solved"><i class="fa fa-check"></i></th>
-                        {% endif %}
-                        <th class="problem">{{ _('Problem') }}</th>
-                        <th class="pcode">{{ _('Problem code') }}</th>
-                        {% if show_types %}
-                            <th>{{ _('Types') }}</th>
-                        {% endif %}
-                        <th class="points">{{ _('Points') }}</th>
-                        <th class="users">{{ _('Users') }}</th>
-                    {% else %}
-                        {% if request.user.is_authenticated %}
-                            <th class="solved">
-                                <a href="{{ sort_links.solved }}"><i class="fa fa-check"></i>{{ sort_order.solved }}
-                                </a>
-                            </th>
-                        {% endif %}
-                        <th class="problem">
-                            <a href="{{ sort_links.name }}">{{ _('Problem') }}{{ sort_order.name }}</a>
-                        </th>
-                        <th class="pcode">
-                            <a href="{{ sort_links.code }}">{{ _('Problem code') }}</a>
-                        </th>
-                        <th class="category">
-                            <a href="{{ sort_links.group }}">{{ _('Category') }}{{ sort_order.group }}</a>
-                        </th>
-                        {% if show_types %}
-                            <th>
-                                <a href="{{ sort_links.type }}">{{ _('Types') }}{{ sort_order.type }}</a>
-                            </th>
-                        {% endif %}
-                        <th class="points">
-                            <a href="{{ sort_links.points }}">{{ _('Points') }}{{ sort_order.points }}</a>
-                        </th>
-                        <th class="ac-rate">
-                            <a href="{{ sort_links.ac_rate }}">{{ _('AC %%') }}{{ sort_order.ac_rate }}</a>
-                        </th>
-                        <th class="users">
-                            <a href="{{ sort_links.user_count }}">{{ _('Users') }}{{ sort_order.user_count }}</a>
-                        </th>
-                        {% if show_editorial %}
-                        <th class="editorial">
-                            {{_('Editorial')}}
-                        </th>
-                        {% endif %}
-                    {% endif %}
-                </tr>
-                </thead>
-                <tbody>
-                {% for problem in object_list %}
-                    <tr>
-                        {% if request.user.is_authenticated %}
-                            {% if problem.id in completed_problem_ids %}
-                                <td solved="1">
-                                    <a href="{{ url('user_submissions', problem.code, request.user.username) }}">
-                                        {% if problem.is_public or request.in_contest_mode %}
-                                            <i class="solved-problem-color fa fa-check-circle"></i>
-                                        {% else %}
-                                            <i class="solved-problem-color fa fa-lock"></i>
-                                        {% endif %}
-                                    </a>
-                                </td>
-                            {% elif problem.id in attempted_problems %}
-                                <td solved="0">
-                                    <a href="{{ url('user_submissions', problem.code, request.user.username) }}">
-                                        {% if problem.is_public or request.in_contest_mode %}
-                                            <i class="attempted-problem-color fa fa-minus-circle"></i>
-                                        {% else %}
-                                            <i class="attempted-problem-color fa fa-lock"></i>
-                                        {% endif %}
-                                    </a>
-                                </td>
-                            {% else %}
-                                <td solved="-1">
-                                    {% if problem.is_public or request.in_contest_mode %}
-                                        <i class="unsolved-problem-color fa fa-minus-circle"></i>
-                                    {% else %}
-                                        <i class="unsolved-problem-color fa fa-lock"></i>
-                                    {% endif %}
-                                </td>
-                            {% endif %}
-                        {% endif %}
-                        <td class="problem">
-                            <a href="{{ url('problem_detail', problem.code) }}">{{ problem.i18n_name }}</a>
-                        </td>
-                        <td class="pcode">
-                            <a class="pcodecell" href="{{ url('problem_detail', problem.code) }}">{{ problem.code }}</a>
-                        </td>
-                        {% if not request.in_contest_mode %}
-                            <td class="category">{{ problem.group.full_name }}</td>
-                        {% endif %}
-                        {% if show_types %}
-                            <td class="types">
-                                {% for type in problem.types_list %}
-                                    <span class="type-tag">{{ type }}</span>{% if not loop.last %}, {% endif %}
-                                {% endfor %}
-                            </td>
-                        {% endif %}
-                        <td class="p">{{ problem.points|floatformat }}{% if problem.partial %}p{% endif %}</td>
-                        {% if not request.in_contest_mode %}
-                            <td class="ac-rate">{{ problem.ac_rate|floatformat(1) }}%</td>
-                        {% endif %}
-                        <td class="users">
-                            <a href="{{ url('ranked_submissions', problem.code) }}">
-                                {% if not request.in_contest_mode or not hide_contest_scoreboard %}
-                                    {{ problem.user_count }}
-                                {% else %}
-                                    ???
-                                {% endif %}
-                            </a>
-                        </td>
-                        {% if show_editorial%}
-                        <td class="editorial">
-                            {% if problem.has_public_editorial %}
-                                <a href="{{ url('problem_editorial', problem.code) }}">{{ _('Editorial') }}</a>
-                            {% endif %}
-                        </td>
-                        {% endif %}
-                    </tr>
-                {% endfor %}
-                </tbody>
-            </table>
-            {% if request.in_contest_mode and request.participation.contest.use_clarifications %}
-                <br><br>
-                {% if can_edit_contest %}
-                <div style="float: right; font-size: 1.2em">
-                    <a href="{{url('new_contest_clarification', request.participation.contest.key)}}"><i class="fa fa-plus-circle" style="color:green"></i> <u>{{_('Add clarifications')}}</u></a>
-                </div>
-                {% endif %}
-                {% if has_clarifications %}
-                    <div style="font-size: 1.2em; font-style: bold">
-                        <i class="fa fa-question-circle"></i> {{_('Clarifications')}}</div>
-                    <table class="table">
-                        <tr>
-                            <th>{{_('Problem')}}</th>
-                            <th>{{_('Time')}}</th>
-                            <th>{{_('Description')}}</th>
-                        </tr>
-                        {% for clarification in clarifications %}
-                            <tr>
-                                <td>
-                                    <a href="{{ url('problem_detail', clarification.problem.code) }}"
-                                       class="problem">
-                                        {{ clarification.problem.name }}
-                                    </a>
-                                </td>
-                                <td class="time">{{ relative_time(clarification.date) }}</td>
-                                <td><p style="overflow-wrap: break-word; word-break: break-word">{{clarification.description}}</p></td>
-                            </tr>
-                        {% endfor %}
-                    </table>
-                {% else %}
-                    <p style="font-style: italic; text-align: center">
-                        {{ _('No clarifications have been made at this time.') }}</center>
-                    </p>
-                {% endif %}
-            {% endif %}
-            
-        </div>
-    {% elif page_type == 'feed' %}
-        <div class="problem-feed-option">
-            <a href="{{url('problem_feed')}}" class="problem-feed-option-item {{'active' if feed_type=='for_you'}}">
-                {{_('FOR YOU')}}
-            </a>
-            <a href="{{url('problem_feed_new')}}" class="problem-feed-option-item {{'active' if feed_type=='new'}}">
-                {{_('NEW')}}
-            </a>
-            {% if request.user.has_perm('judge.suggest_problem_changes') %}
-                <a href="{{url('problem_feed_volunteer')}}" class="problem-feed-option-item {{'active' if feed_type=='volunteer'}}">
-                    {{_('VOLUNTEER')}}
-                </a>
-            {% endif %}
-        </div>
-        {% for problem in problems %}
-            {% include "problem/feed.html" %}
-        {% endfor %}
-    {% endif %}
-    {% if page_obj.num_pages > 1 %}
-        <div style="margin-top:10px;">{% include "list-pages.html" %}</div>
-    {% endif %}
-{% endblock %}
-
 {% block right_sidebar %}
     {% if not request.in_contest_mode %}
         <div id="content-right" class="problems right-sidebar">
diff --git a/templates/problem/recent-attempt.html b/templates/problem/recent-attempt.html
index f1402a4..d94d17c 100644
--- a/templates/problem/recent-attempt.html
+++ b/templates/problem/recent-attempt.html
@@ -1,20 +1,22 @@
-<div class="sidebox">
-    <h3>{{ _('Last unsolved') }} <i class="fa fa-bullseye"></i>
-    </h3>
-    <div class="sidebox-content" style="padding: 0; border: 0">
-        <table class="table feed-table">
-            <tbody>
-                {% for problem in last_attempted_problems %}
-                    <tr>
-                        <td>
-                            <a href="{{ url('problem_detail', problem.code) }}">{{ problem.name }}</a>
-                        </td>
-                        <td>
-                            <a href="{{ url('submission_status', problem.last_submission) }}">{{ problem.last_submission }}</a>
-                        </td>
-                    </tr>
-                {% endfor %}
-            </tbody>
-        </table>
+{% if last_attempted_problems%}
+    <div class="sidebox">
+        <h3>{{ _('Last unsolved') }} <i class="fa fa-bullseye"></i>
+        </h3>
+        <div class="sidebox-content" style="padding: 0; border: 0">
+            <table class="table feed-table">
+                <tbody>
+                    {% for problem in last_attempted_problems %}
+                        <tr>
+                            <td>
+                                <a href="{{ url('problem_detail', problem.code) }}">{{ problem.name }}</a>
+                            </td>
+                            <td>
+                                <a href="{{ url('submission_status', problem.last_submission) }}">{{ problem.last_submission }}</a>
+                            </td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        </div>
     </div>
-</div>
\ No newline at end of file
+{% endif %}
\ No newline at end of file