The Launcher will create a copy of the CyberStorm PPC ROM and make sure this copy is stored (if modifier) in the saves folder the current configuration.
However, if you use FS-UAE standalone, if will just access the ROM it finds, and this ROM file could be modified by the emulation. This difference in behavior is unfortunate.
Opening the F12 menu / Using the modifier key causes FS-UAE to blink on Windows due to ungrabbing input (might have to disable this feature on Windows).
When internal kickstart is being used and kickstart_file = internal was not used, show GUI message "Using AROS kickstart replacement".
Amiga key sticks when opening/closing FS-UAE menu with modifier+F12: https://github.com/FrodeSolheim/fs-uae/issues/77.
Similar to the above issue, alt-tabbing while holding keys pressed might cause "sticky" key presses in emulation.