Mute bubble blocks video icon in participants window. Can't enable/disable video.

When I serve as host for a meeting in my Pro account, and run the Zoom app on Linux or Windows 10P, I am unable to turn video on or off for participants in the participants window. When I move my cursor over a participant's video icon, the icon is obscured by a "Mute" bubble. The bubble blocks any attempt to turn the participant's video on or off, all I can do it turn the participant's microphone on or off. I see this problem in the latest version of Zoom running on Windows 10 and on Linux Mint 22.