Can't get flatpak override to work

I'm trying to give im.riot.Riot access to my home directory because it doesn't have it by default. After using flatpak override, logging out and back into Gnome, the app still can only see my downloads and desktop directory and nothing else. It very clearly says "filesystem=home;" which should mean it worked, but it didn't. It's worked perfectly on all my other systems, but not Pop!_OS for some reason. Can someone help me with this please?

Code:james@pop-os:~$ sudo flatpak override --filesystem=home im.riot.Riot
[sudo] password for james:
james@pop-os:~$ flatpak override --show im.riot.Riot
[Context]
filesystems=home;
james@pop-os:~$