Spectacle is invoked by the 'print' button and takes a snapshot of the whole screen. Works so far
when you now click 'new screenshot' for a rectangualr area, one has to hit 'Print' a second time before the instruction box comes up. This is not ideal, already since some versions, so not new.
Now additionally, a second or 2 after the instruction box is displayed, the screen turns very dark, so one can hardly see anything on the screenprint.
If spectacle is open, and printscreen is hit, no dark layer comes up. Kinda strange behaviour at all.
As it does not involve HDMI I *do not* consider this duplicate to #459211