The bug
As can be seen in the screenshots, the map says "unknown map" in the chest's inventory and has actual information, when in the player's inventory.
[media][media]
How to reproduce
Get a map and right click it to make it a filled map
Put it into a chest
→ ✔ Map still has its information in the tooltipLeave and rejoin the world
→ ❌ The map's tooltip says "unknown map"Move the map into your own inventory
→ ✔ The information becomes visible again
Linked issues
is duplicated by 4
relates to 1
Attachments
Comments 113


@Anthony Cicinelli
Thou U may not know Chinese, I think U can apparently find that the txts of the Filled Maps in the 1st & the 2nd screenshot R different 😛. The shorter 1 only says "Unknown Map" (未知地图), while the longer 1 gives U the particular info.

Does this still happen in 1.16.1?
Yes, could reproduce.

@Anthony Cicinelli
IDK, but I was sure that it happens in 20w30a.

Still present in 23w51b

Present in snapshot 24w03b

Still not addressed in 24w05b

Note: You have to use Advanced tooltips (F3+H).

That's not the issue.
What exactly is the bug here? Can you explain?