When daisy chaining two U2518D with an XPS 15-9560, the second U2518D displays 6 bit color depth?
XPS 15-9560 USB Type-C out port -->
USB Type-C to DP converter -->
U2518D DP in portU2518D DP (MST) out port -->
DP to DP cable -->
U2518D DP in port
Both display 8 bit when used independently.
Is there any known GPU driver issue?