Simon Godden
Inspired
That doesn’t sound good, but I can’t say whether it will cause you actual problems. I’ve just had my unit repaired under warranty for a very similar issue where the leds stayed on even when the unit was unplugged. Mine is one of the early units without headphone jack.Not firmware related but some of my computers USB ports cause my FM3 screen to light up when it's not turned on. Can this cause damage? It happened with my desktop and my laptop.
It became an issue when my mac started disabling usb saying an accessory was drawing too much power.
In my case it indicated a faulty USB port and faulty motherboard components, and this was fixed under warranty.
Your issues may not be the same, and may not cause any real problems, but I would talk to fractal support.