Tabs "verrutscht" in privatem Modus

#TabsToolbar {
  position: absolute;
  display: block;
  bottom: 0;
  width: 100vw;
  background-clip: padding-box;
  color: var(--toolbar-color);
}

#tabbrowser-tabs {
  width: 95vw;
}

#navigator-toolbox {
  position: relative;
  padding-bottom: calc( var(--tab-min-height) + 8px );
}

.titlebar-buttonbox-container {
  position: fixed;
  right: 0;
  visibility: visible;
  display: block;
}

#TabsToolbar .titlebar-buttonbox-container,
#TabsToolbar #window-controls {
  display: none;
}
          

/*...................Ab hier nur Privater Modus...................*/

/*Das lila Icon für privaten Modus oben rechts eingefügt*/
#main-window[privatebrowsingmode=temporary] #PanelUI-menu-button::before {
    margin-left: 0px!important;
    margin-right: 0px !important;
    content: '' !important;
    display: block !important;
    width: 19px !important;
    height: 19px !important;
    background: url("chrome://global/skin/icons/indicator-private-browsing.svg") !important;
    background-repeat: no-repeat !important;
    background-position: 0px 2px !important;
    background-size: 15px 15px !important;
}

/*Der neue zusätzliche Eintrag: Privater Modus unter dem Tab entfernt*/    
#private-browsing-indicator-with-label {
    display: none !important;
}