1. Not new and I'm almost certain I've seen this reported before, but FWIW: the private message interface is an awful experience for mobile users when multiple recipients are involved. Unlike the desktop skin, it does not even show that there are multiple recipients, and there is only a single Reply option that replies to the sender only. This makes it basically impossible to have a PM chain between more than two people.

2. I'm not sure how new this is, but I noticed it recently: with the demise of Swype, I am now using Gboard on my Android phone. Word correction on this keyboard interacts horribly with the mobile skin FT editor. If I make a typo and try to select the correction suggested by the keyboard, one of two things happens:

a. absolutely nothing -- the word remains unchanged
b. a subset of the word is partially corrected and I am left with a mash-up. For example if the original typing comes out as "abcd" but I subsequently try to correct it to "wxyz" I might end up with "awxy"

The FT editor seems to really hate when you reposition the cursor too. I haven't quite nailed down the characteristics, but if I move the cursor back to insert a word into a sentence sometimes the rest of the correction will suddenly pop into existence. It feels like the editor is trying to do some "clever" positioning or analysis of the entered text in real time and it gets really confused by whatever Gboard does for auto-correction.

This description is kinda vague but that's because the symptoms are really weird, but in any case it shouldn't be hard to reproduce, any non-trivial amount of usage that involves making corrections to typos should suffice.

(I don't think this problem is 100% Gboard's fault because these effects only happen to me on FT)