I had a world in minecraft 1.7.10 java, and I have been optimizing the world until 1.14.4, where I had a wall with some item frames and maps, when I tried to remove them to place them onto another wall, I couldnt, then I tried to destroy the block where they were placed, and it worked, but the item frame and the map just dissapeared, it didn't drop anything.
Maybe is the antiquity of my world, but I don't want to create a new one :c
Thank you for your report!
We're actually already tracking this issue in MC-158158, 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.