On macOS 14.2.1 Sonoma, when our app is displayed in full screen, there is a problem where the operations at hand are not reflected at all on the connection destination.
This issue does not occur on macOS 13 Ventura.
If you stop displaying full screen and reduce the window size, you will be able to operate it to some extent.
Were there any specifications or technical changes around the screen between Ventura and Sonoma?
Mac at hand* - Relay server - Windows to connect to
*This does not occur on windows, android, or ios.