I used the 'Optimize World' feature then loaded a copy of my old world in the new pre-release to test things and noticed that some item frames were on the wrong surfaces or were missing.
The second image should have a large map on the wall, but the only item frame that loaded appeared on the side of the crafting bench.
We do not have enough information to find the cause of this issue.
Please attach the affected (zipped) world file. If the file size is too large, please upload it somewhere else and then link to it here.
This issue has been temporarily closed as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki