Hi I have a folder with the following files:

When I do the following search:

It finds just the file with modification date of 2021-10-28. If I keep running the same query, eventually it returns:

In this results we have both files.
If I keep doing the same query, the results will keep changing. It is not related with recent changes in the file, because this same problem was happening with a file that was modified more than 24h ago. In this example, it has passed 2h since last update in the file.
Can you assist on this?