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1. Minecraft version: 1.12.2
2. Galacticraft version: 280
3. GalaxySpace version: 2.0.15
4. AsmodeusCore version (for 2.0.1 version and above): 0.0.24
5. Side (Single player (SSP), Multiplayer (SMP), or SSP opened to LAN (LAN)): SSP
6. Other add-ons: None

Description of the issue:
If WorldEngine is enabled in config (default), slimeling eggs no longer generate on surface of Mars. Turning off WorldEngine or playing without GalaxySpace fixes this issue.

Screenshot/Video:
Shouldn't be needed since issue is rather straightforward.

Attached log file (or url on pastebin.com):
None since it isn't a crash but rather an issue.

Probably fixed by 8e37490

Fixed in 2.0.17.

Setting "enableMarsWorldEngine" likely can serve as a workaround until this is fixed with lesser impact than turning off WorldEngine for all dimensions.