I tested the Absorption and Health Boost effects, with Regeneration (each at level 128), and I noticed that the screen sometimes jitters when health is regenerating.
1. Take Health Boost (at high level, 127 is max amplifier)
2. Take Regeneration (with amplifier at 5 or higher)
3. Play in Survival (5-10 minutes, because the bug is not everytime present)
In order to better reproduce it, I suggest to take Jump Boost 128 (amplifier 127) and to jump.
It can be also noticed that it is like we took damage, because health bar is blank when screen jitters, but we actually didn't take damage.