I just tried to edit a question (retag and new title) on Movies & TV via the SE Android app.

When I clicked on „Preview“ or „Submit“, I got the pop-up message

Not allowed to suggest edits

This was reproducible with another question.

Interestingly enough, clicking the submit button a second time worked and my edit was accepted.

Needless to say, I have edit privileges. So I should be able to not only suggest edits, but edit instantly.