Sidebary sidebar title not hidden after update to Firefox 140 beta

[Dimas-sc]

After updating to Firefox 140 beta, the sidebar title "Sidebery" is shown, and it should be hidden by my userChrome.css.

This is my userChrome.css working until now:

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#TabsToolbar {
    visibility: collapse !important;
}

#sidebar-box[sidebarcommand="_3c078156-979c-498b-8990-85f7987dd929_-sidebar-action"] #sidebar-header {
  display: none;
}

The horizontal tabs are hidden, so the file is readed, but I can't hide the sidebar title. Any tips?

Thx

[ChilledMoth]

The sidebar header of the legacy sidebar is still being hidden.

You are using the revamped sidebar (sidebar.revamp in about:config) to which Mozilla has recently added additional sidebar headers for all web extension sidebar panels (1943147).

If you want to continue using it without the headers, try this as your userChrome.css file:

@-moz-document url("chrome://browser/content/browser.xhtml") {
  /* hide horizontal tabs toolbar */
  #TabsToolbar {
    visibility: collapse !important;
  }
}

@-moz-document url("chrome://browser/content/webext-panels.xhtml") {
  /* hide revamped sidebar panel header for all web extension sidebar panels */
  sidebar-panel-header {
    display: none !important;
  }
}

[Dimas-sc]

It works, thx!