Polygon block timestamps mismtach

when running the following query, one can see that earlier block heights have a later timestamp value than blocks that come after
cross referencing against polygonscan shows that the values are indeed incorrect. scope of problem is unknown

{
  ethereum(network: matic) {
    blocks(height:{between:[18279190, 18279192]}) {
      height
      timestamp{
        iso8601
      }
    }
  }
}

Seems like the problem is genuine. I have raised this issue forward to the technical team.

This issue is caused by reorg needs to check data and reindex it.

It’s on the backlog.

We fixed it. Please check