Unity application minimising

Hi,

Has anyone ever encountered their Unity application randomly minimising or becoming windowed? We've had reports of this, and I think this could be due to something on the machines running the application, but we've tried to find out what, and had no luck.

The application we're running is to be kept full-screen for long periods of time, which is why this is an issue.

I wondered if there's maybe something graphics driver-related that's at play.

Thanks