*When I spawn a shulker or a wither by command and re-open the world, they always face north and west!!*

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What I expected to happen was...:They face a direction I've set.
Describe what you thought should happen here

What actually happened was...:

When I turn off the game and re-open the world, a shulker always faces north and a wither always faces west!**

Steps to Reproduce:
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2. ...
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