Terrain looks mostly normal, but around lava lakes there's a clear mismatch. I have a whole bunch of mods installed though, but I don't think any of them should affect the generation. Should I try to make a smaller reproduction? Do I need to regenerate the surface each time?

This might be an artifact of upgrading the mod. There were many changes to terrain generation in v1.0.0, and a minor change in v1.1.14. This can cause discontinuities at chunk boundaries, between chunks generated by different versions of the mod.

It doesn't align with chunk boundaries. From what I can see - it's 2 cell wide border around each lava lake.

Hm, can you share a screenshot, and your modlist?

Should I make a gitlab ticket? Can't attach images here.

Yes, thank you!

Thanks for filing the issue! Just a few more questions:

• Does this happen for every lava patch on the planet (or near enough)?
• Does this happen for both types of Crucible's lava tiles? (There are 2 version, with one being somewhat brighter than the other, like on Vulcanus)

This happens to all the lava patches from what I can see, both colors.

Alright thanks, I'm only slightly baffled. Somehow the tile transitions are getting messed up. I'll do some debugging later when I'm able.

I can reproduce this issue with the modlist you provided, but I can't seem to find the source of the bug. I also noticed some tiles on other planets having similar visual bugs, so my best guess is that one of the mods is accidentally modifying some shared definition.

At least I'm not crazy :) Next step would probably be to disable half or so of the mods...