Grey Screen Chrome Remote Desktop

Using version 91.0.4472.10 on chrome version 91.0.4472.77

Both host and client are Windows 10 pro 19042.

I started getting a blank, grey screen on the remote PC in Google Remote Desktop, but it would work fine in incognito mode.

My debug logs were simple repetitions of the same error message

[0528/010526.881:WARNING:dxgi_duplicator_controller.cc(260)] Failed to initialize DxgiAdapterDuplicator on adapter 1 [0528/010526.882:WARNING:dxgi_duplicator_controller.cc(81)] Count of references reaches zero, DxgiDuplicatorController will be unloaded.

I uninstalled the addon and also chrome on both host and remote PC's. Purged all personal data. No avail.

Checked and upgraded graphics drivers on host machine, no avail.

I eventually narrowed it down by disabling and enabling extensions one by one.

An extension named Octoshop was causing the video feed from the remote client to not draw. I'd imagine similar extensions such as Camelcamelcamel may do the same thing.

Googling this issue lead to a few hits about the problem and no solutions, so I'm posting it here and tagging it as solved so that anybody else with the issue will have something to find to get a resolution.