Cuts are not straight when working on a 120fps comp.

Hey,

I am currently working on a composition with a framerate of 120fps.

When I cut the material/ layer (an image sequence also on 120fps) the cuts are not straight and they get extended by a bit which eventually also influences the image as suddenly I have two layers overlapping each other. I really do not understand why this is happening. Also, I do not have any problems with a different framerate.

Maybe anyone here has an idea?