I have recently installed Firefox Developer Edition on my Linux Mint 20.3 laptop. It has more than the required resources to run Firefox smoothly but has one problem: (like in this post: https://support.mozilla.org/de/questions/1200248, the solution for that didn't work...) When I click a link in an external application it opens a new window with one empty tab but the URL won't be opened, neither in the previously open window now in the new window. I would have added a screen recording if possible but here seems to only be a screenshot possible.