I am also experiencing this bug. It should be noted that it does not happen in Fedora 29 (it is mentioned here by a F29 user : https://gitlab.gnome.org/GNOME/gtk/issues/1572 and I have also checked it myself) so it seems to be Ubuntu specific.
I am also experiencing this bug. It should be noted that it does not happen in Fedora 29 (it is mentioned here by a F29 user : https:/ /gitlab. gnome.org/ GNOME/gtk/ issues/ 1572 and I have also checked it myself) so it seems to be Ubuntu specific.