Shutter’s official PPA has been abandoned many years ago, but luckily a PPA by linuxuprising has been available for over two years already and made it possible for Ubuntu and Ubuntu-based distros’ users to comfortably install Shutter.
Two further bugs have been fixed after the recent 0.99.3 release:
After a long time there is another bugfix release:
Fix for previous version. I acidentally had left a debug
code there, resulting in wayland-specific code to be executed for X11 system.