I have found than mobs do not take knock back when attacked if the block the are on is on fire. I have tried it on a variety of mobs, and it works the same way. As soon as the mob steps off the fire, they are able to take knockback.
MC-179174
Mobs do not take knock back while in fire
Resolved
Duplicate
0
Thank you for your report!
However, we are already tracking this issue, and this report is a Duplicate of MC-100769.
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