No options shown even though device is discovered

[sigurd4]

OS version: Arch Linux x86_64 / 6.12.7-arch1-1
Browser version: firefox 133.0.3-2 + arkenfox user.js
Extension version: v0.3.1
Bridge version: fx_cast 0.3.1-1

Description
The chromecast device is detected and its name shows up correctly (TV-rom 2) in the plugin's popup menu. However no other information or options/buttons are shown. This happens on any page. Screenshot below:

This looks all good:

Steps to reproduce

1. Install aur package: $ yay -S fx_cast or $ yay -S fx_cast-bin
2. Configure local hostname resolution: https://wiki.archlinux.org/title/Avahi#Hostname_resolution
3. Setup systemd service: https://github.com/hensm/fx_cast/wiki/daemon
4. Install firefox plugin at https://hensm.github.io/fx_cast/
5. Go to any webpage (for example, a youtube video)
6. Click on puzzle icon / plugin icon on firefox toolbar, then click on fx_cast to open its menu

Expected behaviour
It should show some kind of button or options where i can choose to cast to TV or something, right?

[sigurd4]

The window also keeps closing on its own when i move my mouse over to firefox, idk if this is intended behaviour