Topic on 2017 wikitext editor/Feedback

https://phabricator.wikimedia.org/T212680, workaround is disabling syntax highlighting.

After doing some editing to a page. When you insert a table using Insert > Table, the editor basically becomes unusable. The editor is unusable as in when you try deleting or entering text on one line, the text is deleted or entered on another line. I originally posted this at Wikipedia:VisualEditor/Feedback on the English Wikipedia, but it makes more sense for it to be here. This has been going on for at least a few months now.