Moving an actor with a ClutterDeformEffect applied flickers
After a few hours of debugging, I can't tell what is causing this exactly, but it seems to happen on 3.32 and above.
A quick reproducer in looking glass:
actor.add_effect_with_name('lg', new Clutter.PageTurnEffect({period: 0.1, angle: 10, radius: 40}))
Then move the relevant actor - it should flicker (which is a bug).
I thought this had something to do with 8655bc5d but I tried the same thing using ClutterBlurEffect (also an offscreen effect) and didn't reproduce the flickering.
CC @feaneron @cosimoc (since this breaks the wobbly effect on Endless, so this ticket may be of interest to you)