too_much, while already on final approach, just before initiating the go-around, they were given an updated QNH 997, when shortly before it was 998. The difference is less than 30 feet, so I can't see that playing any role here.
The difference to standard pressure setting is roughly 27 ft/hPa * (1013-997) hPa = 432 feet.
Do we have any indication if or when they set the altimeter setting to standard during their go-around? At one point they would have to do it since they had announced that they would climb to FL 080 (transition altitude being 3240 ft (900 m QFE)). Increasing the setting in the Kollsman window also increases the indicated altitude, so how would that influence things?
Bernd