After removing the diode the short remained and I discovered that it was actually the 5V line supplying both diodes and the fan. The source of the short turned out to be a diode near the fan connector which is all-ready mentioned in other topics. I hadn’t tested the fan but apparently it was shorted too. After removing the fan-diode the short is gone but the snap animation is still missing.
Since its a cosmetic issue I wont continue investigating much further either.