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Sometimes when opening a new window the window opens but focus remains on the "parent" window instead of going to the "new" window.

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I thought it might be because I was moving to mouse pointer to the slide bar on the right but even intentionally holding it still this still happens.

I thought it might be because I was moving to mouse pointer to the slide bar on the right but even intentionally holding it still this still happens.

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Check the settings here;

Firefox (Options / Tools) > Tabs.

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Do you see a visible switch, in other words, the new window comes up but promptly moves behind the window from which it was opened? That can be caused by a bug in the Flash player plugin's protected mode feature. More information and workarounds in this thread: Opening New Windows and Shockwave Flash.

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I'm not sure about that. I will be more attentive and make a note if that does happen.

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Open new windows in a new tab instead X Warn me when closing multiple tabs X Warn me when opening multiple tabs might slow FF

   Don't load tabs 'til selected
   When I open a link in a new tab...
   Show tab previews in the windows taskbar

These are the current settings under Options/Tabs (X=checked)

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Here's what happens: I opened, in a new window, an article on a forum. Within that window I clicked a link. The forum has a setting whereby links are automatically opened in new windows. The new window did open and had focus momentarily - it then moved back and the 'parent' window regained focus. I closed both the parent and newly opened windows and returned to the forum main page. I immediately reopened the article and clicked the link within. This time the new window opened and retained focus - as one would expect.

I then shut down FF and repeated this process and got the same results.

So, is the flash player issue mentioned?

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Hi fforie, to diagnose this as the Flash protected mode issue, keep one window open with some Flash loaded in it. I think the YouTube home page loads Flash without starting anything playing. If that solves the problem in the forum scenario, then yes, I think Protected Mode most likely is the issue.

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re: starting youtube first (to get flash running)

jscher2000, it looks like that's the ticket! Thanks for the info!

As an aside, I experimented by first starting youtube in internet explorer and this had no effect on the window behavior.

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Hi fforie, on the IE point, that makes sense. Adobe publishes different Flash players for IE (ActiveX technology) and Firefox (plugin technology) which run independently of each other.