After upgrading to Ubuntu 19.10 from 19.04 I face similar issues with the clipboard. I experience these issues the most in Notepad-plus-plus which is installed via snap from stable branch. Under both Xorg and Wayland desktop servers the clipboard does not work between Notepad-plus-plus and other text editing applications reliably while switching to Gnome flashback (metacity) does not have these issues.
In my case not only clipboard issues are present, but the favorites side bar and related windows also show graphical glitches on mouse hover over.
mutter (wayland?) version is 3.34.1
Xorg version is 7.7 if i am not mistaken
gnome-flashback/panel are 3.34.0
metacity is 3.34.1
After upgrading to Ubuntu 19.10 from 19.04 I face similar issues with the clipboard. I experience these issues the most in Notepad-plus-plus which is installed via snap from stable branch. Under both Xorg and Wayland desktop servers the clipboard does not work between Notepad-plus-plus and other text editing applications reliably while switching to Gnome flashback (metacity) does not have these issues.
In my case not only clipboard issues are present, but the favorites side bar and related windows also show graphical glitches on mouse hover over.
mutter (wayland?) version is 3.34.1 /panel are 3.34.0
Xorg version is 7.7 if i am not mistaken
gnome-flashback
metacity is 3.34.1