14.4.1 limitations with USBC-6950U

M1 13-inch MacBook Pro, 16GB, Sonoma 14.4.1 and the USBC-6950U. 2 external monitors. DisplayLink manager 1.10.1 build 93. I am using Citrix Viewer 23.11.0.78.
Was working great before 14.4.1.
Now when I attempt to go full screen across the 2 external monitors, the laptop screen goes white and it expands just on one external monitor. and then I cannot see any of the applications that are running. I have reached out to DisplayLink, and they have not been able to solve the issue.
What else do you need to know?
Thank you

Thank you for contacting Plugable support. Given your description of the behavior, we would like to take a closer look at your system to better help assist, but we require some additional information. Instead of posting that information here, could you please contact us directly via email? To do this, please email us at support@plugable.com. In the subject of your direct email, please reference case 431012 which will allow us to match things up and then provide the next steps.

Apologies for the extra steps in the process, and we thank you for giving us the chance to help!

Best regards,

Plugable Support