Board Thread:Support Requests - Getting Technical/@comment-48209-20190820191138/@comment-5811199-20190821040414

It shouldn't be reverting and it should be sticking to your preferred editor. Not sure why you're experiencing this - it's possible that the wiki you're using has an experimental setup running.

I'd suggest asking Staff using Special:Contact and providing them with links to pages that are randomly put you into the classic editor.