fix

app/views/admin/communication/websites/pages/_list.html.erb

 <%
-  hide_buttons |= false
+  hide_buttons ||= false
 %>
 <div class="table-responsive">
   <table class="<%= table_classes %>">

app/views/admin/communication/websites/posts/_list.html.erb

 <%
-  hide_author |= false
-  hide_category |= false
-  hide_buttons |= false
-  selectable |= false
+  hide_author ||= false
+  hide_category ||= false
+  hide_buttons ||= false
+  selectable ||= false
 %>
 <% if selectable %>
   <input type="hidden" name="ids[]" value="">

app/views/admin/education/programs/_list.html.erb

 <%
-  hide_diploma |= false
-  hide_parent |= false
+  hide_diploma ||= false
+  hide_parent ||= false
 %>
 <div class="table-responsive">
   <table class="<%= table_classes %>">