I haven't tried editing specifically on mobile, mostly because I prefer to do all my uploads and edits on desktop, but the switches for OOC/IC don't work at all and in fact just highlights like an image for me. I'm assuming this is a In General mobile issue, considering the other talk about it.
Though, sometimes Mobile will just. Stop working, won't scroll, and just reload at random sometimes. Which sucks if you're typing out a message to someone or commenting on a forum. Though, whether that's mobile or my phone can be debateable, as my phone doesn't do that for other sites.