Using the End Portal, digging under the end portal 2 blocks, trying to center wither under center column, replacing floor with obsidian.. spawning Wither in this space should stick foot of wither under center of Portal Column when spawning in, (wither shifts 1 block out from spawn location spot.. then with wither head stuck inside Bedrock, Wither takes no suffocation damage.

Expected result, with foot of Wither being summoned in is exactly under End Portal Column, the wither should spawn with center head directly in the center column of the Portal Bedrock blocks, wither should immediately, after summoning in, should start taking suffocation damage, skulls should detonate immediately upon shooting in the Bedrock.

This breaks Wither Rose Farms and Wither Star Farms.