FireFox 129.0.2 (64-bit) - This issue persists across updates. If a YTTV tab is left inactive for a few minutes, the keyboard shortcuts (ex: 'm' to mute) stop working until the page is interacted with again using the mouse (clicking on mute/volume, stop/start the stream etc.) The stream plays normally otherwise. I'm not sure if this is related to YTTV, Firefox, extensions or Windows (Win 10 Pro) Extensions: UBlock Origin, Privacy Badger, MalwareBytes Browser Guard, Old Reddit redirect and Reddit Enhancement Suite 15-30 tabs are normally open. Firefox is currently using 2.5Gb memory (32Gb installed). Privacy Settings are set to custom (image attached).