Material Scale resetting?

On certain BSP, the scale I set the tiled materials sometimes resets, or stretches to something unrecognizable.

I’ve searched on Google but found nothing, anybody have any idea why this is happening?

Thanks in advance!

Have you probably scaled the BSP with the transform tool? -> you have to do it in the BSP edit mode to avoid texture streching. Otherwise go to the BSP settings and choose another texture display mode (dont know the exact name :))