On a multi-monitor system, if I'm viewing a full-screen video in Flash on one monitor, clicking the mouse on the other monitor causes Flash to leave full-screen mode and revert to normal size.
What's the easiest way of preventing this that works on my version of Flash?
My system is Flash 10 (10.0.12.36), in Firefox 3.5 on Windows Vista 64, but I think it affects all current versions.
This is very annoying behaviour, but unfortunately, according to this bug report response it seem to be a security feature, rather than a bug:
We understand that many users would like fullscreen on one monitor and to be able to interact with your OS on another monitor. However, due to security requirements, we require that Flash and Browser must be the current focus of your OS.