Hi,
I´m quite certain that I have seen a thread about this problem in the past but I couldn´t find it anymore.
Most of my prints work decently but sometimes the X-Axis seems to be offset after printing a while. This happens maybe in one out of ten prints.
At a certain layer the X-Axis seems to shift a bit to the right and keeps doing that for several layers. Then it stops shifting and prints normally again.

The result is a bit difficult to describe but it should be apparent what I mean with the pictures attached to this post.

What is the problem here and how can it be solved?

It sounds like a classic case of a loose x-motor toothed pulley. Check that the grub screw engages the flat on the motor shaft correctly and has not loosened.

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Bill

It appears that was the case. Thank you very much.