After vanilla install, applications relying on accurate defaults for which file manager to use will fail (silently).
- Using transmission; right clicking and selecting "Open Folder" will do nothing
- Chromium - clicking "Show in folder" for downloaded items won't open anything
pcmanfm is the default file manger but nautilus is still configured as default under xdg-mime settings
xdg-mime query default inode/directory nautilus.desktop
Update pcmanfm as the default option to be used as nautilus is not installed by default; this can be updated as below:
xdg-mime default pcmanfm.desktop inode/directory