Perhaps this will be a doubler theme, but maybe it will bring something new.
I read that users complain about invisible sheep, zombies and more. I ran into another kind of problem, all of my horses that were equipped with armor, no matter what, become invisible. But once I remove the armor, the horse is again visible (highlighted in red in the screenshots).
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However, this issue is a Duplicate of MC-137563.
It has been linked to this report. If you have additional information, please add it to that report.
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