This is the single most common point of disagreement in a wind claim. A homeowner walks the yard, finds nothing, and assumes the roof came through fine. Meanwhile a whole rake of shingles has been folded back by the gust and dropped again, each one carrying a fracture line across the mat where it bent.
The crease matters because the shingle's waterproofing depends on an intact mat and an intact granule surface. Once the mat is fractured, that line becomes the weak point. Granules shed along it, UV reaches the asphalt underneath, and the shingle begins to fail on a timeline the manufacturer never designed for. It will not necessarily leak this month. It will not last its rated life either.
The same is true of a shingle whose seal strip has released. It is still nailed in place, still sitting flat, and no longer bonded to the course below. A hand test tells you immediately: a sealed shingle resists, an unsealed one lifts freely. That is a test an adjuster will perform too, and it is one of the things we document with photos during an inspection so the condition is on record.