Affects Version/s: Minecraft 1.14.3, Minecraft 1.14.4 Pre-Release 5
Fix Version/s: None
Running Java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Map with Id#0 duplicated several times after creating a new one from empty map in creative mode.
Step I used to reproduce the bug:
1. Create a new world
2. Get an empty map
3. right click on the empty map several times
Here's a step-by-step video
(I can't upload it here since it's a 150MB video)
I also found out that:
1. Map Id#0 contains nothing and won't work properly. But after relogging, it does contain something and works as intended.
2. After removing map Id#0, it doesn't duplicate anymore.