mojira.dev
MC-157590

Map sometimes shows "unknown map" when not in the player's inventory

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

  1. Get a map and right click it to make it a filled map

  2. Put it into a chest
    → ✔ Map still has its information in the tooltip

  3. Leave and rejoin the world
    → ❌ The map's tooltip says "unknown map"

  4. Move the map into your own inventory
    → ✔ The information becomes visible again

Linked issues

Attachments

Comments 120

What exactly is the bug here? Can you explain?

@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.

110 more comments

Obviously still not addressed in 26.3 snapshot 10, you’d think now maps are under the loop this annoying bug would be fixed…

Edit, the sometimes in the title is not correct. It’s -every- relog. When you click/drag them they luckily get their id’s back.

To ZYX_2D

Would you be fine with me taking ownership of this bugreport? Been co-testing it along with my bug report list for a long while. Unless you’ve active at it as well ofcourse.

Greetings,

Mr. Quasi

This problem needs to be fixed. I enjoy making maps of my world and this problem has taken all my enjoyment out of Minecraft. I cannot make my big world map without having visible IDs to know where the maps are stored and what ones need to go where. This wasn’t a problem back in 1.21.

@DawnTreader This bug is pretty old, it was there in 1.14, when you move the maps around in your inventory the id’s are back, but when you relog it’s gone.

ZYX_2D

(Unassigned)

Confirmed

Platform

Low

Maps, UI

filled_map, map

1.14.4, 19w40a, 1.15 Pre-release 5, 20w07a, 1.16.1, , 1.21.10, 25w44a, 1.21.11, 26.1.2, 26.2

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