Maps that have been placed on item frames are not showing. Only the item frame is visible. The maps are physically there and the map name appears when you touch it, but the map itself is invisible.
Paintings are doing the exact same thing, but that issue has already been reported.
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Thank you for your report!
We're actually already tracking this issue at MCPE-76166, so I will resolve and link 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.
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