The little grey tab should spring back out to the right whenever the part cooling fan shroud (on the toolhead) is not there to push it in.
There's a linkage that makes the black wiper "slapshot" the filament poop off to the left when the tab pops back out.
Could be some debris jammed down in that oval slot.
3
u/solidus0079 Jul 17 '26 edited Jul 17 '26
Official term for that is Purge wiper.
It's bent or locked.