To reproduce:
1. Mount a horse (preferably tamed).
2. Go into a portal. I was only able to reproduce it with Nether portals.
3. Dismount the horse.
Result: Sometimes the horse goes through the portal, sometimes it doesn't. I wasn't able to find a clear pattern. Pushing the horse around sometimes seems to help.
Related issues
Comments
violine1101
FaRo1
Thank you for your report!
We're actually already tracking this issue in MC-151648, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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