Lady Junky wrote: With Firefox, it basically deleted a big part of the page I was editing. But, it does not seem to do it when I use the Source Mode?
I got that bug, too.
This can be due to unclosed tags in templates (which are now being rendered, making the editor more sensitive to code errors). If you have specific examples, please send them in to Special:Contact/bug so we can take a look and double-check.
Correct, we're planning to disable the classic editor's visual mode in Edge in the next release (but will look at whether we can bring it back again for that browser in the future).
Okay. Before the RTE update, it worked well but now not so in the future I may see it fixed. For now I use source mode primarily. Also, input[type="submit"] styling is still broken on wikis made styling into this with css. The rest is okay now