Sending video and content to Cisco devices

Hi all - here's the problem - three Cisco devices connected to a Zoom meeting using CRC - DX80, DeskPro, Webex Board. All work fine initially, but if someone shares content, the DX80 no longer displays live video, and checking stats seemed to indicate none is being sent. The DeskPro and Board have no issue, everything works as expected. My customer reported this to me and I was able to duplicate the issue. Customer has cases open with both Cisco and Zoom - no resolution yet. Anybody run into this?