How have you installed the Linux client? AppImage, AUR, Snap or Flatpak? I ask as the only "official" version is the AppImage. The others are maintained by third-parties. If it's not the AppImage you are using it may be better asking the maintainer of the version you have installed.
Apologies, but just for the sake of clarity, when you say "menu bar" can I confirm that you are referring to the menu bar at the top of the app (as shown below)?
