https://discussions.apple.com/thread/256028948?answerId=2613...
I also ran into it with 15.4.0 and worked around it by creating an image that's the solid color I like to use. It turns out that the system-supplied solid color options are themselves just 128x128 pixel PNG images too:
https://discussions.apple.com/thread/256028948?answerId=2613...
I also ran into it with 15.4.0 and worked around it by creating an image that's the solid color I like to use. It turns out that the system-supplied solid color options are themselves just 128x128 pixel PNG images too:
https://discussions.apple.com/thread/256028948?answerId=2613...