It seems to be MASKEDIMAGE doing it. Using LoadImage with a flag of 0 or FILTEREDIMAGE seems to get it working properly, but using AutoImageFlags doesn't seem to affect it.
Edit: Something keeps resetting the AutoImageFlags, it works for the images loaded straight after AutoImageFlags, but something in MaxGui I think resets it back to default.
Edit: Something keeps resetting the AutoImageFlags, it works for the images loaded straight after AutoImageFlags, but something in MaxGui I think resets it back to default.