When did those start happening?
|*Skies of felysian and unstable (volcanic) worlds are bugged|
*Volcanic worlds look wrong when viewed from space (this might also be the case for other planet types)
*Planet surfaces randomly change (volcanic worlds do that, and perhaps some others too)
*Random crashes happen, some without known causes, some with known causes (unstable planet + transparant surface = crash upon landing, for example)