This is an interesting thing:
I run Xfce with pcman-fm as default file manager. Everything is respecting that, except downloads in Chrome-based browsers: If I click on the “Show in folder” option after downloading a file, it still opens Thunar.
Now, if I go and view “all download” and pick the option “Open download folder”, Chrome / Brave / Chromium opens pcman-fm.
Not a big problem and an obscure one, but does anyone know a quick fix?