@gcarlo_f, is that what you did? I see the greyed overlay, but it fails to:
An error occurred while taking a screenshot.
KWin screenshot request failed:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Potentially relevant information:
Method:
CaptureScreenMethod specific arguments: “DP-1”
@developers, has this already been reported as a bug? I differs to previous errata: