What’s new with macOS Catalina 10.15.6 Supplement Update for Mac. According to Apple’s release notes, the update fixes a problem that could cause virtualization apps to crash. Not only that, it also fixes an issue on “washed out” after waking from sleep. Read depth information from Apple’s full release notes here
”macOS Catalina 10.15.6 supplemental update includes bug fixes for your Mac.
– Fixes a stability issue that could occur when running virtualization apps
– Resolves an issue where an iMac (Retina 5K, 27-inch, 2020) may appear washed out after waking from sleep