diff --git a/app/assets/stylesheets/access_permissions/access_modal.scss b/app/assets/stylesheets/access_permissions/access_modal.scss
index d83980af2..20b2b333a 100644
--- a/app/assets/stylesheets/access_permissions/access_modal.scss
+++ b/app/assets/stylesheets/access_permissions/access_modal.scss
@@ -10,6 +10,15 @@
     &:focus {
       box-shadow: none;
     }
+
+    &.disabled {
+      color: $color-black;
+      opacity: 1;
+
+      .caret {
+        opacity: 0;
+      }
+    }
   }
 
   .modal-body {
diff --git a/app/controllers/access_permissions/projects_controller.rb b/app/controllers/access_permissions/projects_controller.rb
index 57ae09775..4f55863c0 100644
--- a/app/controllers/access_permissions/projects_controller.rb
+++ b/app/controllers/access_permissions/projects_controller.rb
@@ -38,7 +38,7 @@ module AccessPermissions
       @user_assignment.update!(permitted_update_params)
 
       log_activity(:change_user_role_on_project, @user_assignment)
-      propagate_job(user_assignment)
+      propagate_job(@user_assignment)
 
       respond_to do |format|
         format.json do
diff --git a/app/views/access_permissions/my_modules/my_module_member.json.jbuilder b/app/views/access_permissions/my_modules/my_module_member.json.jbuilder
index a250dbeae..43b413999 100644
--- a/app/views/access_permissions/my_modules/my_module_member.json.jbuilder
+++ b/app/views/access_permissions/my_modules/my_module_member.json.jbuilder
@@ -5,7 +5,7 @@ json.form controller.render_to_string(
   formats: [:html],
   locals: {
     user: @user_assignment.user,
-    update_path: access_permissions_my_module_path(@my_module)
+    update_path: access_permissions_my_module_path(@my_module),
     with_inherit: true,
     assignable: @my_module
   },
diff --git a/app/views/access_permissions/partials/_default_public_user_role_form.html.erb b/app/views/access_permissions/partials/_default_public_user_role_form.html.erb
index 2fa1254ec..e6aa3dac8 100644
--- a/app/views/access_permissions/partials/_default_public_user_role_form.html.erb
+++ b/app/views/access_permissions/partials/_default_public_user_role_form.html.erb
@@ -1,3 +1,4 @@
+<% editable ||= false %>
 <% if assignable.visible? %>
   <%= form_with(model: assignable, url: [:update_default_public_user_role, :access_permissions, assignable], method: :put, remote: true, html: { class: 'member-item', id: 'public_assignments', data: { action: 'replace-form autosave-form', object_type: assignable.class.name.underscore.to_sym } }) do |f| %>
     <div class="user-assignment-info">
@@ -13,28 +14,35 @@
       <div class="user-assignment-role">
         <div class="user-assignment-controls">
           <div class="dropdown pull-right">
-            <button class="btn btn-light btn-role-select" type="button" id="defaultPublicUserRole" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
-              <%= f.object.default_public_user_role.name %>
-              <span class="caret"></span>
-            </button>
-            <%= f.hidden_field :default_public_user_role_id, value: f.object.default_public_user_role.id, class: "default-public-user-role-id" %>
-            <ul class="dropdown-menu dropdown-menu-right user-assignment-dropdown" aria-labelledby="defaultPublicUserRole">
-              <% user_roles_collection.each do |role| %>
-                <li>
-                  <a href="#" data-turbolinks="false" class="user-role-selector" data-role-id="<%= role[1] %>">
-                    <%= role[0] %>
-                  </a>
-                </li>
-              <% end %>
-              <% if assignable.top_level_assignable?  %>
-                <li role="separator" class="divider" data-hook="support-dropdown-separator"></li>
-                <li>
-                  <a href="#" data-turbolinks="false" class="user-role-selector" data-role-id="">
-                    <%= t('access_permissions.remove_access') %>
-                  </a>
-                </li>
-              <% end %>
-            </ul>
+            <% if editable %>
+              <button class="btn btn-light btn-role-select" type="button" id="defaultPublicUserRole" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
+                <%= f.object.default_public_user_role.name %>
+                <span class="caret"></span>
+              </button>
+              <%= f.hidden_field :default_public_user_role_id, value: f.object.default_public_user_role.id, class: "default-public-user-role-id" %>
+              <ul class="dropdown-menu dropdown-menu-right user-assignment-dropdown" aria-labelledby="defaultPublicUserRole">
+                <% user_roles_collection.each do |role| %>
+                  <li>
+                    <a href="#" data-turbolinks="false" class="user-role-selector" data-role-id="<%= role[1] %>">
+                      <%= role[0] %>
+                    </a>
+                  </li>
+                <% end %>
+                <% if assignable.top_level_assignable?  %>
+                  <li role="separator" class="divider" data-hook="support-dropdown-separator"></li>
+                  <li>
+                    <a href="#" data-turbolinks="false" class="user-role-selector" data-role-id="">
+                      <%= t('access_permissions.remove_access') %>
+                    </a>
+                  </li>
+                <% end %>
+              </ul>
+            <% else %>
+              <button class="btn btn-light btn-role-select disabled" type="button">
+                <%= f.object.default_public_user_role.name %>
+                <span class="caret"></span>
+              </button>
+            <% end %>
           </div>
         </div>
       </div>