This is a big issue as it breaks behaviour of some of my spline-based blueprints and I don’t see easy fix.
I hope Epic will revert Spline Component to old one, which didn’t change much from UE4 to UE5.3.
One more thing I noticed is that when editing Spline Component it automatically selects Spline Component in Details panel so I have no easy access to blueprint options. This is unneeded and unconvinient.