From the buyer standpoint short sale is a pain because it takes 6 weeks to 6 months.
Why is waiting for the bank’s decision on a short sales a chore for the buyer’s agent ?
I think the answer to your question is obvious from your statement. The buyers’ agent cannot collect a commission for 6 weeks to 6 months. Meantime, they have temporarily (maybe even permanently if the deal falls through) lost a potential buyer. Actual buyers that perform are like gold to agents these days.