After installing the The Veyon on the Windows 10 client, some applications and even the configuration of the The Veyon is blinking.
All computers are the same, have the same applications, and this occurs on 30 computers.
Which version of Veyon are you using? You can try to disable capturing of layered windows in the configurator in the VNC server settings (select builtin VNC server if not selected) within the Service page.