This bug causes the texture of the wither to revert to its original state even if its health is below half

Steps to Reproduce:

[Step 1]summon a wither

[Step 2]move away from the wither until it exits the simulation range

[Step 3]approach it until it re-enters the simulation range

Observed Results:

The wither texture reverts to white and gradually turns blue and eventually black again

Expected Results:

The wither texture should remain black when it returns to the simulation range

Notes:

If the wither's health is below half, and this bug is reproduced, the wither texture will gain an additional Shield, and after that, the wither texture will revert to black and the shield will disappear