Install the plugin attached to this issue in a site (local/ folder) and enable Mobile services Run the app in docker: docker run -p 8100:8100 moodlehq/moodlemobile2:next Wait for the docker command to show: [05:42:29] dev server running: http://localhost:8100/ [05:42:52] lint finished in 26.06 s Navigate to http://localhost:8100 in your browser In the app, login in to your test site and open any course Confirm that you don't see "My awesome plugin" option in the top tabs (see screenshot attached to this issue to view how it looks like when it is displayed). Open local/courseoptiontest/classes/output/mobile.php in your editor Find the init function and remove the "javascript" line Force refresh the browser screen you have with the app (Ctrl + F5) Navigate to the course again Confirm that you do now see the "My awesome plugin" option in the top tabs Add a new line to the return for the init function so that it looks like the following: return array( 'templates' => array(), 'disabled' => true, ); Force refresh the browser screen you have with the app (Ctrl + F5) Navigate to the course again Confirm that the "My awesome plugin" option is no longer visible in the top tabs