New with R54.9: [Removed - Sarcasm]
Regardless of whether you are using pop-up registers or not, the settings icon is not visible in the top right of a register. The only icon now in the top right of a register is a + sign [Removed - Sarcasm].
[Removed - Sarcasm]
Expected behavior: The settings gear icon and menu are visible in the top right of every register.