I have both left click and middle click configured to open in external browser (Firefox). But only left click works. Clicking on links with middle button has no visible effect. I tried changing middle click behaviour to 'open in tab' and 'open in background tab' also. But there's no difference in behaviour. SOFTWARE/OS VERSIONS KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.70.0 Qt Version: 5.14.2