Details
Description
In one of our Moodle 3.9 testing sites, we've found the new improved activity picker does not load in the following circumstances:
- a plugin has been deleted from the server, but uninstall hasn't taken place ==> this makes the plugin 'missing from disk'.
Up until Moodle 3.8, it was possible to keep plugin configuration data in the database, while not having the files of the plugin on the server. This didn't block properly showing the activity picker.
We sometimes do this, to prevent losing the configuration data while the plugin is undergoing maintenance.
When you'd completely process the uninstall for an activity mod plugin, you lose all configuration and have to completely reinstall it once maintenance is finished.
Activity chooser does not display if site contains plugins missing from disk.