When I place a map in an item frame and then relog, the map doesn't load and the item frame appears emtpy.
You need at least 2 players to reproduce.
1. Pick a random location, create a map and place it in an itemframe
2. Delete the map item from your inventory
3. Player B stands next to the map, the player A relogs
4. Player A sees the item frame empty
When player A now holds the map in his hands again, the map will load correctly.
When you load a chunk with an item frame in it, it will also load the map for all clients. This happens when you enter or join in an unloaded chunk (no player is in there).
Comments 3
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been deliviered.
This ticket is incomplete without the requested information, no response has been received within a reasonable time and we are assuming the issue has been resolved. If you are still experiencing this issue, we can reopen it at your request.
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From what you're saying, it would appear that the underlying problem is that the data for a map in an itemframe is only sent to clients on chunk load, rather than when the player logs in, or enters the range where the chunk is sent to the client.