What do you mean by "graphical errors, tiled images, glitched animations"? I have not received any other feedback relating to this and don't know what you mean
Probably what he is talking about are images like this. Since 0.19 these have plagued some of the last scenes with Iris. The last build there almost isn't a single animation that works correctly and doesn't have a bunch of draw errors running across the screen.
I forgot to mention, but yes it is on Android, or at least mine is. Two different phones.
You could probably narrow it done if you recall what you did that was different in Iris' scene from 0.19 going forward, as all other previous scenes work as normal.