Dual Screen, missing windows ?

Hi there
I've got a second screen setup with my iMac and all is working well until the last OSX update. The issue mainly exists with both Thunderbird and Firefox (latest versions of each).
For example if Thunderbird is open and located on my secondary monitor - when I hit "write" to compose a new email the modal window doesn't appear. If I check Thunderbird > Window I can see I have a new mail message window yet can't get to it to compose a mail.
If I move Thunderbird to my iMac screen and do the same thing I see the new empty mail ready for me.
This function has worked ok in the past so I'm not sure whats changed ?
It's possible these windows could be minimised somewhere yet I can't find out how to resize/access them ??
Any suggestions ?
Thanks,

I sounds like Windows is not correctly reading the screen's capabilities. There should be something like a Control Panel to reset the screen resolution to the screen's best native resolution.
With CRT's there was a huge expanse of phosphor on the inside of the tube, and you could fudge the resolution quite a bit. With LCD, you have one "best" resolution, and if you don't hit it perfectly, you get fuzziness or black borders.

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CuckooPint wrote:
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Dual Screen, missing windows ?

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