http://forum.palemoon.org/viewtopic.php?f=1&t=3477
Mozilla fixed a bug that might bother some ppl that have multi-monitors and have their Firefox set to open on an individual screen slightly off edge, or a certain position on a monitor slightly off edge.
https://bugzilla.mozilla.org/show_bug.cgi?id=864107
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If there are users who have *deliberately* placed windows partly/fully off-screen, and expect Session Restore to maintain that position, this will change that behavior, and so could be seen as a regression - but it seems unlikely that is a widely-desired feature.
Once again, Mozilla thinks for its users and chooses what is best for its end users, sound familiar? US Govt 
?Atm, latest firefox by Mozilla does not offer a feature to reverse this fixed bug, But! Palemoon now does.
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New advanced feature: Later versions of the Firefox code will automatically place the browser window fully on a visible portion of the screen. If you prefer having the browser window positioned partially off-screen and want to prevent this automatic resizing and repositioning when starting a new session, create a new boolean preference in about:config called browser.sessionstore.exactPos and set it to true.
Thumbs up to Moonchild for implementing this feature.
