Comment # 10 on bug 1218274 from Peter Küppers

KRDC which uses freerdp is also effected
parameter /gfx on command line with xfreerdp didn't help for me (connecting to
Windows 10 64bit running in Virtualbox on openSUSE 15.5 server) 
downgrading to freerdp 2.4.0 Release 150400.3.20.1 helped