Confirmed to still be there on MCPE beta 0.13.0 alpha build 1 as tested on SONY SGP712.
Just to reiterate: This bug is a HUGE problem for those of us that play inverted. It makes the game almost unplayable. It's screwing up my gameplay on console now as I try (badly) to play without invert on MCPE, and then get confused when I switch back for all my other games.
To reproduce: Go to Options -> Controls -> Invert Y-Axis. Switch to On. Nothing changes. Switch to Off. Nothing changes.
Invert DOES work if you connect a controller. But 99.9% of MCPE users do not use a controller.
Thanks for catching the duplicate. I did search quite a bit before posting the bug; but didn't think to use the word "font". I tried keywords text, double space, etc. I hope this is something they are working on.