I did a clean install of KDE Neon this week and I noticed Firefox is not really set as default. When I go in system settings I see it is set. When I open a .html file or click on a link, it opens Firefox.
But when I go in Firefox preferences, it is not detected as default:
Additionally, I cannot open my Firefox Bookmark with Krunner (which is very annoying), but I think the two problems are related.
How could I fix this issue?