I had the mistake for a long time and was looking for it:
Many of my servos moved uncontrollably when connecting! (different lengths, different random movements)
At some point I noticed that the error occurs with all servos that are connected as "relative servo"!
If I delete the relative servos and control them individually (horizontal servo, for example), the error no longer occurs!
I also started a new project for testing, the error also occurs there.
Anyone have an idea? Since I have a lot of movements for my robot where the motors have to move in opposite directions, I now have a problem.
I can program and then call each position individually but that would be a lot of extra work ...