Cool [Q] Too weird

Hi all!

Does anyone know how to deal with a strange bug I'm experiencing after the 4.4 update?
Basically, if my device (Galaxy Note GT-N8010) is on and I try to charge it via the PC, nothing happens and I cannot charge it, but when I switch off the device I can easily charge it.
I also tried full reset and reflash, but the problem is still there.
Transfers, sync, Kies work fine, so I think I can exclude a PC related issue.

Any help is appreciated.