meet.opensuse.org mising "talking" and audio feedback cues?

Hi, in our team we normally use meet.jit.si but that showed some problems since two weeks so we used meet.opensuse.org as a fallback (which we normally can't use because Chinese colleagues seem to be blocked from it by the GFC). I realized that meet.opensuse.org and seeminly as well meet2.opensuse.org are missing audio feedback icons, e.g. speaker icon and blue balls bar on left- hand side of video preview window to show audio feedback level. Are they disabled by intention or is something not working as expected? I doubt this is related to the version of Jitsi running as meet.jit.si had that feature for at least half a year if not like forever. Have fun, Oliver