Board Thread:Support Requests - Getting Technical/@comment-3047173-20190805155959/@comment-9605025-20190805202333

If you are able to use VisualEditor, you should be able to use classic editor. If you can use classic editor's visual mode, you should be able to use its source mode. If this is not the case, then there is something much more seriously wrong with either the wiki or something on your end.

I just ran a test of both VisualEditor and classic editor's source mode here (take a look at the edit history). Aside from some interesting behavior from VisualEditor, I had no issues editing. As you can see from the revert, the odd behavior from VisualEditor was easily undone via the typical reversion method. As such, it would seem that the issue is only with the classic editor's cisual mode. Indeed, if you look at the example you provided, you will see reference to the fact that visual mode was used. The classic editor's visual mode is also referred to as the rich-text editor (RTE) and you can see that phrase a few times in the inserted gibberish.