I recall this issue happening when I first downloaded the Mac version for JUCE 5, but it was sorted out, but now it is happening again on my Windows machine. I just cloned the JUCE library last night and built the Projucer entirely fresh, but the background color of my application keeps automatically switching to FF505050. Any suggestions?
Are you on the develop branch of JUCE? I don’t think this fix has made its way onto master yet