I am not able to download any files. It doesn't show an error or anything, it just doesn't download.
This only happens on XFCE but, for some reason, it does work on KDE.
I've already tried downloading files in Firefox and it also worked, so it's probably something with Librewolf.
I am using Arch (btw) and the Flathub version, if that helps
Edit: Unfortunately It seems that I won't be able to fix it so I'll just stay with KDE, and if I ever need to download something from XFCE I'll use Firefox ig, thanks everyone for the help tho :)
Tested here with LibreWolf installed with Flatpak system wide. Up to date Arch Linux, installed xfce4 and xfce4-goodies packages, logged in to the xfce-session, started LibreWolf from the menu, downloaded something to ~/Downloads. No issues.
Do you have any network drives mounted? I've had experiences where a program fails to save or download and sometimes hangs if (1) I save to a mounted network drive, (2) I lose the mount for whatever reason, and (3) I try to download or save again and the program presumably attempts to access the last place it wrote to (the lost network mount).