I've recreated this issue on two of my survival worlds a few time.
1st world 5 allays holding honeycombs in an enclosed area. My nether portal is in a separate enclosed area of my base. When I stepped through the portal, the allays appeared in my nether base. When I stepped back through to the overworld, the allays were in the same area as my portal. The allays were no longer in their original location.
2nd world 3 allays. 2 holding dirt in a glass room with no openings. 1 holding an apple in a outdoor tree farm. When I step through the nether portal, all 3 appear in the nether base and when I come back through they are in the main part of the base, not in their normal areas.
Linked issues
duplicates 1
Comments 2
Thank you for your report!
We're tracking this issue in MCPE-158982, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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Could you attach a video of the issue?