Just to be clear, I’m not saying avast has nothing to do with the issue. It could be.

My point was that, even in such case, the other scans are not giving you the same problem, and neither the normal use of avast. So it is something that may appear, and avast may be the culprit (I don’t really know) but it is something completely infrequent.

In any case, it would be nice to see the next avast not having the same problems after any scan, whichever the culprit is.

Let us know if you find something else (like a workaround, a solution, or the real culprit).