"Hide top bar and move close, minimize, restore buttons to top left " CSS snippet stopped working after update

[coreyr2]

hi, the "Hide top bar and move close, minimize, restore buttons to top left (MacOS Big Sur, Firefox 89+)" snippet doesnt work for mac anymore. any help appreciated <333

btw heres my userchrome file rn:

#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items {
  opacity: 0;
  pointer-events: none;
}
#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
    visibility: collapse !important;
}
#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar .titlebar-spacer {
        border-inline-end: none;
}

#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
  display: none;
}

#titlebar {
  appearance: none !important;
  height: 0px;
}

#titlebar > #toolbar-menubar {
  margin-top: 0px;
}

#TabsToolbar {
  min-width: 0 !important;
  min-height: 0 !important;
}

#TabsToolbar > .titlebar-buttonbox-container {
  display: block;
  position: absolute;
  top: 12px;
  left: 0px;
}

#tabbrowser-tabs {
visibility: collapse !important;
min-height: 0 !important;
}

tab{
display:none!important;
}
#main-window #TabsToolbar {
   display: none;
}  

#titlebar {
  appearance: none !important;
  height: 0px;
}

#titlebar > #toolbar-menubar {
  margin-top: 0px;
}

#TabsToolbar {
  min-width: 0 !important;
  min-height: 0 !important;
}

#TabsToolbar > .titlebar-buttonbox-container {
  display: block;
  position: absolute;
  top: 12px;
  left: 0px;
}

[piroor]

By the way you can see the native styling of the title bar with no horizontal tab bar with setting both sidebar.revamp and sidebar.verticalTabs to true on recent versions of Firefox. Setting sidebar.visibility to hide-sidebar allows you to hide the vertical bar (new style sidebar header), so it may be a solution better than fragile userChrome.css.

[piroor]

They correspond to options UI in Nightly:

• Options => Firefox Labs => Turn on "Sidebar" and "Vertical tabs"
• Click the "gear" button in the vertical bar => "Sidebar button" => Choose "Show and hide sidebar"

[coreyr2]

i guess that works but now i have the new vertical tabs along with the tst tabs. i cant hide the vertical tabs without it also turning off tst