Unable to Display Full-screen Viewer on dual-screen setup

Hi,

I spent several hours trying to get a full screen viewer on my main display (27" iMac) and my browser on my external Dell U2412M.

Looking at the many threads it appears that this is a fundamental problem for Capture One (11) - as for years people have been asking the same thing. No reported fix.

All I want is to get my viewer window full-screen on my highest quality display - no mac menu bar or window border distractions. The browser and tools on my second monitor can be full screen, or have windows or menu.

But I can only ever get true full screen with a browser window. Never with a viewer window.

It does not matter which display my browser window is on, it goes full-screen (No menu bar/window border) on either display.

The viewer window however only ever expands to fit screen - it can never be made to go full-screen properly using dual-displays.

Only way to get a Viewer full screen on my iMac is to use single screen mode (but only on one screen), which is annoying with two 27" calibrated displays to use !?!

Is this a hopeless quest? Or am I doing something wrong?

Thanks,

Steve