I noticed a domain name in auction recently that looked funky to me. The domain name was very old, had been unlocked and relocked without transfer, and it had an active website on it. Put simply, I found it peculiar that the domain name was listed for sale in an auction. Before I placed a bid, I needed to get confirmation that the listing was legitimate.
There have been plenty of times where something about an auction looked off, but it turned out to be legitimate. There have probably been more times where something looked off and it was either a fake listing, a case of theft, or something else that made the auction problematic. If I can prevent it, I would rather hold off on placing a binding bid than have to deal with a problem later.