The player I am using is Amberol, installed from Flathub (flatpak). Its command name is io.bassi.Amberol.
To reproduce:
- Start Amberol and play something
- Run
playerctl metadata --format "{{ playerName }}"
Expected output: io.bassi.Amberol
Actual output: io
On the other hand, playerctl -l shows the correct player name.
$ playerctl -l
io.bassi.Amberol
playerctl v2.4.1