SUMMARY I noticed just now that when I tried to take a screenshot (pressing the print key) the info box on the left upper corner was just black. Currently I can reproduce it, although it used to work before. So I don't know what is causing it. I am using Wayland, so might be related.
I can reproduce this issue with the steps provided in bug 415798 *** This bug has been marked as a duplicate of bug 415798 ***