Mask images have wrong file content type
LocalCropScaleMaskHelper does not convert masks during crop-scale processing correctly.
The target file extension is "hardcoded" and does not consider that e.g. a file is of type TIFF for example.
This is a follow-up to issue #46530
#2 Updated by Tomasz Krawczyk over 6 years ago
t3lib_stdGraphics::imageMagickConvert did this well for years. Its successor GraphicalFunctions::imageMagickConvert does the same. It would be good if FAL was using GraphicalFunctions. I would vote for necesary adjustments in GraphicalFunctions for FAL needs.