Logitech G G513 Carbon
CH, Cable
Logitech G G513 Carbon
CH, Cable
I don't know the problem, but maybe remove the knob with the tool that came with it or carefully by hand.
If you see anything obvious, e.g. dirt that can be removed.
Otherwise have it replaced under warranty.
I am very happy with my Logitech G513 Carbon keyboard and do not have this problem. But I can assure you, from my own experience, that Logitech will replace your keyboard without hesitation, even if the warranty has already expired. So quickly get a cheap replacement keyboard (you can always use it) and send it to Logitech or Galaxus.