Broken and mixed textures of various blocks.

For some time now there has been a bug where the textures of different blocks get mixed up, e.g. recently Magma Block had the texture of Command Block, and lava is some kind of misunderstanding.

I hope I don't have to write any more, that it's clear what the problem is, and that this report won't be quickly closed just because someone else might have filed a similar, but different, report earlier. I also hope this report won't be responded to by some random bot with the [Mod] tag, and that the problem will be fixed quickly, because this is unplayable. This is not the game I spent my money on.