I guess that I'm the only one who's using forums on a mobile phone. The first thing I noticed is that whenever I type a dot or comma ,. it just types a blank space. When I delete those spaces, it goes back to normal. Second, sometimes it types the word that I'm currently typing TWICE. It looks like "thisthis". Third, the cursor changes its position by itself. It often goes one symbol before the word that I just have finished typing. It's very annoying. I chat on Vocaverse and other platforms on my phone too. This only happens on here.
It has a lot to do with your input method. But yes I also noticed that the editor on mobile do have lots of issues. (e.g. pasting text using Firefox Android does not seem to paste to the right place, etc. to the point that I started to prefer copying and pasting the whole post as bbcode to the editor when I was on mobile)