Map upgrade bug with 1.8.9 Forge

Author: CorvusTIMVCreated Dec 31, 2024Updated Jan 4, 2026
LabelsBug

Minecraft Version: 1.8.9. Using default MC launcher.

Forge Version: Tested on 11.15.1.2318. Will test on other versions

Logs: No crash report. Could not generate debug.log

https://gist.githubusercontent.com/RealMangoBot/c3dae4e13fe88b9217862969c4540d0f/raw/0fb1b3c083ce45315e19e933b7e685370dfc897d/latest_1.log

https://gist.github.com/RealMangoBot/c3dae4e13fe88b9217862969c4540d0f

Steps to Reproduce:

  1. Clean vanilla minecraft installation, install forge for 1.8.9 with the installer.jar
  2. Make a map with compass in the middle & paper, open the map, then upgrade the map with paper in the crafting table.
  3. You will see the newly created map with the red 0 over it, that cannot be shift-clicked out of crafting, and when read the map will disappear from your inventory.

Very weird bug, when creating a map, and attempting to upgrade/zoom out that map with paper in the crafting table, the newly crafted map is bugged, and will completely disappear from the inventory when used. It also cannot be shift-clicked outside the crafting table and has a red "0" over it.

Video of the issue: https://imgur.com/a/AMunsDV

Source: MinecraftForge/MinecraftForge