Barrels graphics bug

[meekee7]

Sometimes blue and green barrels are rendered wrong. There is a huge, single-colored, untextured, object sticking out from within the barrel. This object appears and disappears when you move around.
This happens in multiple levels, I have not checked all the levels though.

[meekee7]

Curiously enough, the project configuration affects the problem. The original screenshots were taken in a Debug build. In Release and Final builds, the barrels get blue polygons.

[meekee7]

A clue from ChaotianDrac on Discord/Trescom:

Well, those are normalmapped textures... Possibly the engine is getting stuck with too many normalmaps at once on particular objects? that just came to mind. Or, those are 128x256 textures, maybe it's a problem with the textures not being square.