Textures overlap in WC/Hammer editor 3D view

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January 2024

If you have this problem in WC/Hammer, the only known solutions are to change your display size or to reduce your .wad files in WC to 1 or 2. (the problem seems to start with 3 wads or more.)

Overlapping textures can be caused by intersecting brushes, as well, so make sure there aren't any coplanar brush faces.