MP4 - TMS Editor Bugs

[LuckyBoy]

Hello please note the bug concerning lightmap compute (in low quality shading profile) and stadium Dirt has been fixed in July update:
viewtopic.php?f=560&t=41988

For the 1st bug (random colors) I don't see what could cause that, it looks only the bottom of the sky is affected.
In addition, the reproduction of the issue looks to be hard. (you said it comes only once)

Thanks