RateTheRef

See this is what I thought however when reading the LOTG I thought that it's possibly a IDFK from the touchline where the offence took place?

Dissent offences restart with IFK from the point of occurrence, so in that instance the touch line.

As others have said, if you have the opportunity to allow the game to come to a ‘natural’ stoppage, then it is often preferable so long as the offended team isn’t being effectively penalised by the delay.

Edit: if I’m correct in asserting more widely, dropped ball restarts are really only now for injury, referee struck with ball, offences against outside agents, and a match stopped incorrectly (I.e an adjusted restart for an incorrectly awarded foul). All offences by players/officials/match officials against one another have to be either DFK or IFK (depending on nature of offence).