The issue happened again. After system reinstallation and full system update, gufw was launched and enabled successfully, but now after i installed a bunch of other programs i tried opening it again out of curiousity, it's no longer opening again. sudo ufw status
, shows the firewall is still enabled, so just graphical interface doesn't open.
First time this happened, only lts kernel was installed before installing gufw, so i doubt that it is some other application that's causing it. Other than that i don't think i did anything major in the settings, system format (in region and language settings) is changed to my local and caffeine was enabled (disabling it doesn't help).
brent sudo eopkg check gufw ufw
shows ok on both