Mehrzeilige Tabs sind weg

/* Tableiste mehrreihig oben */
#tabbrowser-tabs, #tabbrowser-arrowscrollbox, #tabbrowser-tabs[positionpinnedtabs] > #tabbrowser-arrowscrollbox > .tabbrowser-tab[pinned]
{
    margin-top: -7px !important;
    margin-bottom: -5px !important;
}

[tabsintitlebar="true"][sizemode="maximized"] #navigator-toolbox
{
 padding-top: 10px !important;
}

#titlebar,#tabbrowser-tabs
{
 appearance: none !important;
}

[tabsintitlebar="true"] #TabsToolbar > .titlebar-buttonbox-container,
#main-window[inFullscreen="true"] #window-controls
{
 display: block;
}

/* Mehrreihige Tableiste, Anzahl der angezeigten Tabreihen = 4 Zeilen, weitere per Scrollbar */
box[class="scrollbox-clip"][orient="horizontal"],
tabs > arrowscrollbox
{
 display: block;
 contain: none !important;
}

scrollbox[part][orient="horizontal"]
{
    display: flex;
    flex-wrap: wrap;
    max-height: calc(var(--tab-min-height) * 5); /* Anzahl der angezeigten Tabreihen = 4 Zeilen */
    overflow-x: hidden;
    overflow-y: auto;
}

#tabbrowser-arrowscrollbox /* Geändert nach Update-Fehler 2203 */
{
    margin-top: 7px !important;      /*margin-top: -3px !important; */
    margin-bottom: 5px !important; /* margin-bottom: -10px !important;  */
}

:root
{
 --tab-min-height: 25px !important; 
}

:root #tabbrowser-tabs
{
 --tab-min-height: 25px !important; 
}
    
/* Feste Breite der einzelnen Tabs wenn gewünscht, sonst entfernen bzw. verbreitern */
tabs tab[fadein]:not([pinned])
{
 min-width: 110px !important;/* Minimale Tabbreite 76px */
 max-width: 110px !important;/* Maximale Tabbreite 225px */
}

.tabbrowser-tab .tab-close-button
{
 display: block !important; 
}

tabs tab[fadein]:not([pinned])
{
 flex-grow: 1;
}

/* Buttons/Zwischenräume Ausblenden */
hbox.titlebar-spacer,
#alltabs-button,tabs tab:not([fadein]), 
[class="scrollbutton-up"],
[class="scrollbutton-up"] + spacer,
scrollbox[part][orient="horizontal"] + spacer,
[class="scrollbutton-down"]
{ 
 display: none; 
}

tab.tabbrowser-tab .tab-background
{
 margin-top: -2px !important;
 border: solid 1px hsla(0,0%,50%,.5) !important;
}

tabs tab:after,tabs tab:before
{ 
 display: none;
}

#TabsToolbar > .titlebar-buttonbox-container
{
 display: none !important;
}    

/* #TabsToolbar:not(:-moz-lwtheme)
{ 
 color:pink !important;
 margin-top:-1px !important;
} */

/* #TabsToolbar:-moz-lwtheme
{ 
 margin-bottom: -7px !important;
 margin-top:-5px !important;
} */

/* #TabsToolbar
{ 
 margin-bottom: 0px !important;
 padding-top: 4px !important;
}  */
 
/* #menubar-items :not([fokus]), #tabbrowser-tabs :not([fokus])
{
 opacity:1 !important;
} */

/* Button for scrolling tabs to the left */
#scrollbutton-up
{
 display:none;
}

/* Button for scrolling tabs to the right */
#scrollbutton-down
{
 display:none;
}

/* Höhe für '+'-Button (newtab) */
.tabs-newtab-button
{
 vertical-align:bottom !important;
 /*vertical-align:top !important;*/
 height:var(--tab-min-height:) !important;
}

/*Drop-down menu for all tabs */
#alltabs-button
{
 display:none;
}

/* Darstellung Tabs aus alter UserChrome   ####################################################### */
#TabsToolbar .tabbrowser-tab
{
 margin:1px 1px 0 0 !important;
 padding:0 !important; 
 height:22px !important;
 border:1px solid #0081FD !important;
 /*border-bottom:0 !important; */
 border-top-left-radius:8px !important;
 border-top-right-radius:8px !important;
 /* alt: margin:1px 1px auto 0 !important;*/
 font:11px 500 Arial, sans-serif !important;
 color:#FFD700 !important;
 -moz-box-flex:0 !important;
}

/* TAB bei Mauskontakt: * Hintergrundfarbe, Rahmen */
#TabsToolbar .tabbrowser-tab:hover
{
 border:1px solid #FFF !important;
 background:#2896FF !important;
 color:#00478A !important;
}

/* TAB aktiv */
#TabsToolbar .tabbrowser-tab[selected="true"]
{
 background:#002344 !important;
 font-weight:bold !important;
 color:#FF0 !important;
 border-color:#FF0 !important;
}

/* Tab-Icons */
#TabsToolbar .tab-icon-image
{
 height:16px !important;
 width:16px !important;
 margin-left:-8px !important;
 margin-bottom:1px !important;
}
  
/* Tab-Close X */
#TabsToolbar .tab-close-button
{
 margin-right:-14px !important;
 /*margin-left:auto !important;*/
 /*padding:0 !important;*/
 color:#FFD700 !important;
}

#TabsToolbar .tab-close-button .toolbarbutton-icon
{
 height:16px !important;
 width:16px !important;
 /*background-color:#BDFEFF !important;*/
 /*border-radius:5px !important;*/
}

/* Close-Button inaktiver Tab */
tab:not([selected]) .tab-close-button
{
 display:block !important;
 color:#72B7F9 !important;
 /*margin-right:-5px !important;*/
}

/* Alle anderen Elemente in TABs */
#TabsToolbar .tabbrowser-tab *
{
 background:none !important;
}

/* Tab-Rahmenelemente entfernen (obere Linie aktiver Tab, Seitentrennlinien) */
#toolbar-menubar:not([autohide="true"]) + #TabsToolbar .tabbrowser-tab > .tab-stack > .tab-background,
:root:not([tabsintitlebar]) .tab-background,
:root[extradragspace] .tab-background
{
 border-top-style:none !important;
}

.tabbrowser-tab::AFTER,
.tabbrowser-tab::BEFORE
{
 border-left:none !important;
}

.searchbar-textbox, #urlbar
{
 border-radius:10px !important;
 min-height:30px !important;
 padding:0 !important;
 margin:0 !important;
 background:#002344;
}

/* Schrift Tabs nachträglich */
.tab-text
{
 font-size:11px !important;
 font-weight:500;
 color:#FFF !important;
}

.tab-label-container[textoverflow][labeldirection=ltr]:not([pinned]),
.tab-label-container[textoverflow]:not([labeldirection]):not([pinned]):-moz-locale-dir(ltr)
{
 direction:ltr;
 mask-image:linear-gradient(to left, transparent, black 0em) !important;
}