This is a barely a duplication of 6872 but not exactly.
6872 shows what happens to JUST WITHERS but not explane how and why.
When making a wither boss NORTH TO SOUTH it deletes the soul sand and heads and u have a wither.
When making it EAST TO WEST, it leaves blocks behind.
ALSO when trying to make 4 Staris into corner staris in a 2x2 area. when you're trying to do it faceing north or south it is much harder than faceing east and west.
Linked issues
Comments 3
but then it will never get fixed becasue they'll never see it
If they fix something but forget to read comments, then you just add a new comment about not fully fixed and ask the issue to be reopened. It is actually more likely that they do not read other linked issues (like this one), but only the main issue and assume that any relevant info from duplicates are copied into the main issue.
Please do not create new tickets just to add information to the original ticket. This additional information can be added to the original ticket via comments/screenshots.