I run 1024x768 and have exactly this issue. After playing around in localstore.rdf I found that these lines should be changed:
<RDF:Description RDF:about="chrome://browser/content/browser.xul#main-window" screenX="0" screenY="0" width="1024" height="768" sizemode="maximized" />
Into these:
<RDF:Description RDF:about="chrome://browser/content/browser.xul#main-window" width="800" height="600" screenX="4" screenY="139" sizemode="maximized" />
Which somehow fixed it. Apparently setting the width+height to a value too high (for instance the exact screen resolution) indirectly causes the issue. I don't know what the real problem is.
I run 1024x768 and have exactly this issue. After playing around in localstore.rdf I found that these lines should be changed:
<RDF:Description RDF:about= "chrome: //browser/ content/ browser. xul#main- window"
screenX= "0"
screenY= "0"
width= "1024"
height= "768"
sizemode= "maximized" />
Into these:
<RDF:Description RDF:about= "chrome: //browser/ content/ browser. xul#main- window"
width= "800"
height= "600"
screenX= "4"
screenY= "139"
sizemode= "maximized" />
Which somehow fixed it. Apparently setting the width+height to a value too high (for instance the exact screen resolution) indirectly causes the issue. I don't know what the real problem is.