Jumping labels of associations

[YummyHOF]

When the line passes through the label, the shifting works OK. But when nothing gets in the way of the label, it's annoying. The problem is greater the longer the label and the less the association is at right angles to the classes. See the video (I'm sorry that my mouse is shifted from its actual position in the recording)

https://github.com/OpenPonk/openponk/assets/140723524/55b52021-85c5-4133-9c44-4713c7384b95