Shutter screenshot application is broken since upgrade to Ubuntu 21.04 Hirsute Hippo

Since upgrading to 21.04, the Shutter screenshot tool stopped working. I installed it from the PPA http://ppa.launchpad.net/linuxuprising/shutter/ubuntu, it is at Version 0.95, Rev.1450

Let's say, I start in this configuration:

When I now try to screenshot a selection, instead of showing the screen contents, it tiles it's own window content:

I would assume this has something to do with permissions, since the Window dropdown list is empty. Trying to capture the whole desktop yields an error message Keyboard could not be grabbed.

I already tried re-installing it via apt purge. There are no matching issues on Shutter's Github page.

Any ideas on how to fix this?

Solution 1:

Seems to be caused by Wayland session.

You have to logout and then login back to Ubuntu on Xorg.

Solution 2:

Shutter support pointed me to the root cause:

Ubuntu 21.04 switched to wayland (again), and shutter does not support wayland (yet).

See Shutter Github issue for it.

Workaround as pointed out by @N0rbert

1. Log out of Ubuntu
2. Select your user account
3. Click on the gear wheel (lower right of screen) and select Ubuntu on Xorg
4. Login again