Could you send an example map where this bug happens? I can't seem to reproduce it.
I recompiled Next just a few mins ago and it seems to still exist even in this map I made just now. udmf-scaletest.wad
added Rendering Software renderer labels
changed title from [NEXT] Texture Scaling on floors/celings doesn't respect Level Brightness on Slopes to Texture scale affects plane brightness in Software
mentioned in commit 6a4b26a0
changed title from Texture scale affects plane brightness in Software to Texture scale affects plane brightness in the software renderer
mentioned in merge request !2240 (merged)
closed with commit 6a4b26a0
closed with merge request !2240 (merged)