Using Firefox 134.0, Video Downloadhelper 9.1.0.44 detects only the first video on a non-YouTube site. When a second video is selected and begins to play, it is not recognized ("No media to process in current tab). F5 Refresh does not change this behavior. I've tried clearing cookies & site data, cached files & pages, history, and site settings. The only workaround is to close Firefox completely and restart. I've tried going back to older versions of Firefox and Video DLH. Prior to about 4-6 weeks ago there was no problem. For comparison, VDLH works just fine in Chrome on this same site.