Teste den dann bitte mal, ich kann ansonsten das Verhalten hier nicht feststellen.
CSS
@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
#PersonalToolbar{
max-height:280px!important}
.bookmark-item
{
margin-top:2px !important
}
#personal-bookmarks
{
display:block;
}
#personal-bookmarks #PlacesToolbar
{
display:block;
min-height: 0px!important;
max-height: 200px!important ;
}
#personal-bookmarks #PlacesToolbar > hbox
{
display: -moz-stack !important;
left:0px;
right:0px;
width: 100%;
}
#personal-bookmarks #PlacesToolbar #PlacesToolbarItems
{
overflow-x:visible;
overflow-y:visible;
}
#personal-bookmarks #PlacesToolbar #PlacesToolbarItems > box
{
display:block;
}
#personal-bookmarks #PlacesToolbar > .bookmark-item
{
visibility: visible !important;
}
#personal-bookmarks #PlacesToolbar .chevron
{
display:none;
}
#personal-bookmarks #PlacesToolbar > hbox > hbox
{
overflow-x:hidden;
overflow-y:hidden;
}
#personal-bookmarks #PlacesToolbar #PlacesToolbarDropIndicator[collapsed="true"]
{
display:none;
}
#personal-bookmarks #PlacesToolbar #PlacesToolbarDropIndicator
{
display:none;
}
#personal-bookmarks #PlacesToolbar toolbarbutton.bookmark-item
{
padding-top: 2px;
padding-bottom: 2px;
padding-left: 3px;
padding-right: 3px;
}
#personal-bookmarks #PlacesToolbar toolbarbutton.bookmark-item:hover:active:not([disabled="true"]),
#personal-bookmarks #PlacesToolbar toolbarbutton.bookmark-item[open="true"] {
padding-top: 2px !important;
padding-bottom: 2px !important;
-moz-padding-start: 4px;
-moz-padding-end: 2px;
}
#personal-bookmarks #PlacesToolbar toolbarseparator
{
-moz-appearance: none !important;
visibility: visible !important;
display:inline;
text-shadow: none !important;
border-left: 3px solid ThreeDShadow !important;
border-right: 3px solid ThreeDHighlight !important;
vertical-align: middle;
}
#personal-bookmarks toolbarbutton.bookmark-item[dragover][open]
{
-moz-appearance: toolbarbutton;
}