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1. Minecraft version:1.12.2
2. Galacticraft version:4.0.3
3. GalaxySpace version:2.0.19
4. AsmodeusCore version (for 2.0.1 version and above): 0.0.31
5. Side (Single player (SSP), Multiplayer (SMP), or SSP opened to LAN (LAN)):SSP
6. Other add-ons:/

Description of the issue:
how to disable the new background ?(Proxima B) I want to adjust the background to the previous one.  I try to adjust the configuration item :

# Enable/Disable new Main Menu.
B:enableNewMenu=false

but after disabling it, it becomes the original background of MineCraft. Where are the configuration items for adjusting the background? If there is no configuration item, can you create one?Thanks!

Screenshot/Video:

Attached log file (or url on pastebin.com):

Change the background (New) of Figure 1 to the background (old) of Figure 2