Recorded a video of the issue happening: https://youtu.be/LFoUrE1OHwQ
Added a gif in case the video goes down:
The head of my character gets squished when one of the controls for the Spline IK is in certain position. The squish gets diminished if I turn on Y Stretch in the modifier but I need it to have 0 squish going on.
This is not the first time this happens, so I must be doing something wrong while rigging or there must be an option I don't know about... Any ideas?