[Bug] Shrink sidebar until hovered of userChrome.css after FF 133

[marrak]

Abstract

After upgrade of Firefox from 132.0.2 to 133.0 Shrink sidebar until hovered does not work

Steps to reproduce

1. Start Firefox with clean profile.
2. Install TST.
3. Use userChrome.css
   /* Shrink sidebar until hovered, when using Tree Style Tab. */
   :root {
   --thin-tab-width: 1px;
   --wide-tab-width: 100px;
   }
   #sidebar-box:not([sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"]) {
   min-width: var(--wide-tab-width) !important;
   max-width: none !important;
   }
   #sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] {
   position: relative !important;
   transition: all 100ms !important;
   min-width: var(--thin-tab-width) !important;
   max-width: var(--thin-tab-width) !important;
   }
   #sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"]:hover {
   transition: all 200ms !important;
   min-width: var(--wide-tab-width) !important;
   max-width: var(--wide-tab-width) !important;
   margin-left: calc((var(--wide-tab-width) - var(--thin-tab-width)) * -1) !important;
   }

Expected result

Tree is properly shrinking

Actual result

Tree is not visible at all (only tool tips of cards can be seen)

Workaround

Changing
margin-left: calc((var(--wide-tab-width) - var(--thin-tab-width)) * -1) !important;
to
margin-left: -1px !important;

alt least shows tab, but works hard :/

Environment

• Platform (OS): Win10
• Version of Firefox: 133.0
• Version (or revision) of Tree Style Tab: 4.0.25