[Vertical tab - Extension] Sidebar flickering in fullscreen mode

[lukas-kasticky]

To Reproduce

1. Go to YouTube or any video other video
2. Put it on fullscreen
3. See flickering sidebar

Expected behavior

Sidebar hides (maybe configurable?)

Screenshots

Setup information

• OS: openSUSE Aeon
• Installation method: Flatpak
• Firefox version: Librewolf 126.0-1
• Theme version: master
• Optional features enabled:
  • gnomeTheme.extensions.tabCenterReborn true
  • gnomeTheme.extensions.tabCenterReborn.alwaysOpen true
  • gnomeTheme.hideSingleTab true
  • gnomeTheme.symbolicTabIcons true
  • gnomeTheme.extensions.tabCenterReborn true
  • gnomeTheme.extensions.tabCenterReborn.alwaysOpen true

Additional context

Found the following snippet in the wiki, but it doesn't improve anything.

#main-window[inFullscreen="true"] #sidebar-box[sidebarcommand="tabcenter-reborn_ariasuni-sidebar-action"],
#main-window[inFullscreen="true"] #sidebar-box[sidebarcommand="tabcenter-reborn_ariasuni-sidebar-action"] + splitter {
    visibility: collapse;
}

[rafaelmardojai]

CC @BirdInFire

[ghost]

will check on this bug soon on firefox rpm first