Veyon Students window resizing automatically

[Pinesh]

Hi

I am teacher administering a small classroom of 16 computers and using Veyon for the same.
Veyon has been extremely helpful to control - View - Monitor students PC's.

Off late (from last 1 month) facing the below issue:
--> The veyon screen displayed from Veyon master to the students screen
--> 3 to 4 students computer screen (out of 16 computers) keep resizing
---> they change the size on its own
---> first for a few minutes - my (veyon mastre) full screen occupies their screen
--> and then suddenly without any action - their screen size becoms bigger by 20% and moves to slight right position...

We are using Windows 10 latest OS on all computers
Veyon latest version is installed i.e. Version 4.6.0
Our network is LAN and we have windows server 2019

Can i please get some help of how to resolve the issue...

Thanks & Regards
Pinesh