since lately the chromium browser shows weird behaviour!
it doesn't open links from for example thunderbird anymore.
any clue, what's wrong here?
The issue appeared after an update? Then I think the update to the bowser or chromium caused it.
Can you also check the command
to see if it isn't caused by a apparmor rule blocking chromium to open the link.
Watch out for thunderbird, apparmor and chromium strings in the output.