Only when Twins are used, the palette hit detection changes.
Prior to the recent update, the pallet's hit detection was exactly the same as the shape of the board.
If you jumped from the low side of a collapsed pallet, Victor could easily jump over the pallet even if it was close to the pallet.
However, with the recent update, the pallet's hit detection has changed only when using the Twins, so that even if you jump in from the low side, you will still hit the pallet.
Attached is a video, 0-5 seconds is the previous version and after that is the current version. Obviously, the hit detection has changed.
I also tested the Huntress axe and it jumped over the low side of the pallet without any problem, so I think the hit detection is changed only when using the twins.