Message "Switch call to this device" keeps popping up in the desktop app

Account type: US

Desktop version: 9.4.3-29474

I started having this issue in the last week. After a call ends, I get a green button in the RingCentral for Windows desktop application asking if I want to switch call to this device.

There isn't another active call. If I click the "Switch" button, it tries to perform the action but I just encounter dead air. The phone number listed in the popup changes over time (often, it's the number from my last call).

If I do nothing, the green button will often disappear on it's own.

Anyone else encounter this? Suggested solutions?

P.S. Already rebooted, so that isn't a solution. ;-)