[GeckoLib Animation Utils] Display preview looks broken

[ChuilaHinata]

with 3.1.1 of gecko plugin and 4.11.0 blockbench, the display preview in blockbench seems to be broken as it doesnt match the result when it export into game.
this was working fine 2 days ago but today it suddenly come out like this.
other than that, when I export a geckolib model, the version is always give me 1.21.20 instead of the normal 1.12.0. which cause minecraft crashed as geckolib's report said not supported model

[ChuilaHinata]

btw this is a gun pack for Vic's point blank, I had contact Vic and he said this is not caused by mod incompat or mods problem (the display still works fine 2days ago, and point blank do not get any update in these 2 days.)
I am guessing that this is an export bug due to Blockbench update, but I have no any coding background so it just a blind guess.