Under Agreement and back on market

[Donald M.]

There was a property I was interested in that went under agreement and about 20 days later it is now back on the market. As I understand, there are only a certain number of reasons a person can back out of a deal, so I'm assuming something came up at the inspection. I'm concerned because I don't know what that something is.

If I make an offer on the property and then have an inspection (which seems like a waste of money because the earlier person probably just got an inspection), what is the chance that my person will miss what the first person found and I will be stuck with this property?

Am I looking at this the right way? Is this a common scenario?