#1 Original report
Sometimes corners don't fit together like shown in the gif. The corner blocks causing problems are orange. The screenshot shows the buttons to use for testing. The zip includes the blueprint.
#2
Build a Test ship for this .. and found a disturbing thing
the problem is not occuring when docked to a station
in one orientation as afar as i could see ... two edges moving into each other bounce up and down
to reproduce - load the supplied test and try out the red light marked position while floating freely and while docked to a station