#appcontent { -moz-appearance: none !important}

foxxyn8 said: you're asking me to fix something that's occurring after the url changes, but before the content loads. Sorry, but I can't. Short of setting #appcontent to to always have a -moz-appearance:none which causes the gradient to disappear from the window frame. (see : http://forum.userstyles.org/discussion/28282/bug-missing-white-gradients/#Item_2 ) Besides you're saying that doing that introduced some other bug (which btw I can't reproduce.) It is not my style that is causing this.
@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
#content,
#appcontent,
#content > tabbox > tabpanels {
background-color: transparent !important;
}
#main-window[inFullscreen="true"]{
-moz-appearance: -moz-win-borderless-glass !important;
background: none !important;
}
#main-window[stylish-url="about:blank"]:not([onclose^="PrintUtils"]):not([title^="Source Chart"]):not([chromehidden="menubar toolbar directories extrachrome "]) #content browser:not([src]){
opacity: 0 !important;
}
#appcontent { -moz-appearance: none !important}#main-window[stylish-url="about:blank"]:not([onclose^="PrintUtils"]):not([title^="Source Chart"]):not([chromehidden="menubar toolbar directories extrachrome "]) #appcontent {
-moz-appearance: none !important;
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