When I was end busting, the end cities were generating very weirdly. Pathways that end nowhere, buildings and staircases cut off, and sometimes buildings and such don't even generate in their entirety. This might be due to certain chunks generating and not generating the end city.
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Hi there!
This seems to be a duplicate of MC-194263. The developers at Mojang are hard at work trying to fix the bug, and have therefore prioritized it as Very Important (one of only 18 open reports like this). It is extremely unlikely that this will make it into an official release.
If you have any further information besides anything already on the ticket I've linked above, be sure to comment on that report. It might make the fix a bit easier for the developers!
Thanks for helping the Minecraft team squash this bug 🙂Â