So I found an extremely annoying bug with the spring arm component that took me days to figure out it was causing it.
Repro steps:
Create a new actor blueprint, add a Cube component, attach a spring arm to it.
Place it in your level, hit play then jump on it with your character (using third person template btw).
Now try moving on the cube using wasd keys and you will notice a weird camera jittering.
Remove the spring arm and try it again to see how it works without the glitch.
Can we please have a fix for this soon?