Not anybody I know or from anywhere else did I see your problem. If you think it is a bug and you want to ask Jagex "what was the reason", you can use the Report Bug feature in the game.
Meanwhile for the RSOF users, I recommend setting up and saving backup your preferred UI settings so you can always restore to it effortlessly:
Settings -> Edit Layout Mode -> Save/Load Layout.
30-Oct-2023 15:56:06