If a wither T has the head side towards a negative direction (north, west, or down), dispensers are unable to place a wither skeleton head where they are supposed to. However, they are able to place wither skeleton skulls far into positive directions that they should not be able to.
Steps to Reproduce:
Place T of soul sand with the flat part facing north, west, or down.
Place a dispenser with a wither skeleton head such that it would place a wither skeleton head on the top of the wither T.
Power the dispenser.
Observed Results:
The dispenser shoots out a wither skeleton skull.
Expected Results:
The dispenser places a wither skeleton skull.
In the second video I show an extreme case (I believe the most extreme) of dispensers being able to place skulls in places they should not be able to.
I just ran into this issue as well. I've attached the world
[media]that demonstrates this with the dispensers in different orientations as well as the "T", to show that it is purely based on the direction of the "T", not the dispensers.
So much for my auto wither killer that only works if the Wither is facing in one of the broken directions. Not sure how I'm going to use my 6 double chests of Wither skulls now. 😅 I guess I can bounce back and forth in a minecart with the right mouse button held down and a dropper to make sure my stack never runs out....