Unchanged behaviour with different buttons types/Iron trapdoors - I've updated the attached screenshots
Also affects 1.19.51
Affects 1.19.0
Banners from Outpost also do not stack with creative inventory ones.
Placing, breaking and collecting them doesnt appear to cause any issues.
Not tested with banners from multiple versions, only 1.19.0.
Also affects trident killers - which should give you the effect since its tec. a player thrown entity. But since i dont want to make any assumptions...
TDLR: Affects Trident Killers.
This is being tracked in MCPE-125388.
It works if you push the armor stand around with slime blocks like the following for example in flying maschines (Apologies for the grainy background, resource packs fault):
[media]Does not affect Zombified Piglin spawns above 256. Those work fine.
Resolved in 1.18
Tested seperatly from the test world provided in 1.17.32 - was not able to reproduce the bug.
Also affects 1.20.0