Firefox 68 Add-ons "Updates installieren"-Schaltfläche fehlt

/* Neuer Addon Manager */

addon-list addon-card > .addon.card
{
    width: 70vw !important;
    margin-bottom: 5px !important;
    height: 60px !important;
}

addon-list section addon-card,
addon-list section addon-card .card.addon
{
    cursor: default !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed
{
    cursor: pointer !important;
}

#addons-page #heading hbox.heading-inner #heading-name.header-name
{
    -moz-box-ordinal-group: 2 !important;
    padding-left: 10px !important;
}

.addon-badge-private-browsing-allowed {
    width: 220px !important;
    background-position: left !important;
}
.addon-badge-private-browsing-allowed::after
{
    content: "(In privaten Fenstern erlaubt)" !important;
    margin-left: 20px !important;
} 

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu
{
    position: absolute !important;
    margin: 0 !important;
    margin-inline-end: 0 !important;
    left: 90px !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options
{
    margin-left: 0 !important;
    margin-inline-end: 0 !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu button.more-options-button.ghost-button
{
    display: none !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list
{
    display: block !important;
    visibility: visible !important;
    margin-bottom: 0 !important;
    padding: 0 !important;
    border: none !important;
    background: none !important;
    box-shadow: none !important;
    --in-content-button-background: none !important;
    top: 30px !important;
}

.arrow, .arrow.top, .arrow.bottom,
addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item-separator
{
    display: none !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="toggle-disabled"]
{
    position: absolute !important;
    top: 16px !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="remove"]
{
    position: absolute !important;
    top: 16px !important;
    left: 120px !important;
}
addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="install-update"]
{
    position: absolute !important;
    top: 16px !important;
    left: 540px !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="preferences"]
{
    position: absolute !important;
    top: 16px !important;
    left: 230px !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="report"]
{
    display: none !important;
}

addon-list section addon-card .card.addon .addon-card-collapsed .more-options-menu addon-options panel-list panel-item[action="expand"]
{
    position: absolute !important;
    top: 16px !important;
    left: 360px !important;
}

/*  Addons-Verwaltung: Hintergrundfarben und vom Container für about:preferences  */

     #nav-header,
    #category-box {
    background-color:darkkhaki!important;
    }
    #discover-view,
    #view-port,
    #react-view {
    background:blanchedalmond !important;
    font-size: 15px!important;
    }
    richlistbox.list > richlistitem.addon {
    background:white!important;
    margin-left:-20px !important;
    margin-top:  7px !important;
    }
 
    #list-view > #addon-list .description-container {
    margin-left: 350px !important;
    margin-top: -10px !important;
    border-radius:60px !important;
    padding: 5px 8px 2px 7px !important; 
    }    

    #list-view > #addon-list .addon.addon-view {
    padding: 5px 80px 2px 7px !important;
    border-radius:60px !important;
    }

/*    Ausblenden der Suchleiste und Firefox Optionen */

    #header-inner,
    .sidebar-footer-button,
    .message-bar    {
    display:none!important;
    }


/*    Kategorien angeklickt Text weiß, Hintergrund dunkelrot */

    *|*.category[selected],
    *|*.category.selected {
    background:darkred!important;
    color:white!important;
    }


/*    Kategorien nicht angeklickt Text dunkelrot */

    *|*.category {
    color:darkred!important;
    }


/*    Kategorien hover Hintergrund + Schrift */

    *|*.category:hover {
    color:white!important;
    background:red!important;
    }
    
/*  Kategorien in abgerundeten Buttons */

    #preferencesButton,
    #addonsButton,
    #helpButton,
    #category-availableUpdates    {
    background-color: red !important;
    margin-top:5px !important;
    border-radius:60px !important;
    }    


/*    Add-ons entdecken entfernt */

    #category-discover{
    display:none!important;
    }

/*  Breite der Elemente anpassen */

    addon-list addon-card > .addon.card
    {
        width: 70vw !important;    
        addon-card[expanded] >.addon.card    
        width: 70vw !important;
    }
    
/* Privatmodus und empfohlene Erweiterungen Icons entfernen */

    .addon-badge-recommended,
    .addon-badge-private-browsing-allowed {
    display:none !important; }

/* Ghost Button */

    panel-item[action="toggle-disabled"][data-l10n-id="disable-addon-button"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/Aus.png") !important;
    width: 16px !important;
    height: 16px !important; 
    }
    
    panel-item[action="toggle-disabled"][data-l10n-id="enable-addon-button"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/An.png") !important;
    width: 16px !important;
    height: 16px !important; 
    }
    
    panel-item[action="remove"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/trashicon.png") !important;
    width: 16px !important;
    height: 16px !important; 
    }
    
    panel-item[action="install-update"] {
    width: 16px !important;
    height: 16px !important;
    fill: red!important; 
    }
    
    panel-item[action="preferences"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/Erdmännchen.png") !important;
    width: 16px !important;
    height: 16px !important; 
    }
    
    panel-item[action="report"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/newsreader.png") !important;
    width: 16px !important;
    height: 16px !important; 
    }
    

    panel-item[action="expand"] {
    --icon:  url("file:///c://Users/xxxx/AppData/Roaming/Mozilla/Firefox/Profiles/zzappmj3.Nightly/chrome/Icons/Woodstock.ico") !important;
    width: 16px !important;
    height: 16px !important; 
    }       
       
    /*Restore Version Number */
     
    @-moz-document  url-prefix(chrome://mozapps/content/extensions/aboutaddons.html) {
    
    .addon-name[title]::after {
      display: block !important;
      content: attr(title) !important;
      margin-top: -22px !important;}
    }