There are two classes in the codebase that are in a classes directory but aren't in the correct format for autoloading:

1. `qbank_importquestions\form\question_import_form` is in question/bank/importquestions/classes/form/import_form.php rather than "question_import_form.php"
2. `core_filters\local_settings_form` is in filter/classes/form/local_settings_form.php so the namespace should probably be `core_filters\form\local_settings_form` --> Moved to MDL-84556

I'm assuming any code that uses these is working around this somehow so it's not an actual manifested bug as such, and I'm not quite sure what the best fix would be, but it seems unexpected. I didn't see anything about it on here so thought it would be worth pointing out.