Photoshop 27.8 ALL COLORS ARE WASHED OUT

Right after the june 18 2026 Photoshop update , the colours of every .PSD that I open are WASHED OUT!!!  If, in Photoshop-preferences I disengage the “Use Graphics Processor” colours look allright again….. My set up is an iMac Pro ( 2017 ), connected to an Eizo-monitor.