#51 CD extractions cannot be verified as accurate

[Max]

This is a follow up to bug #49 .

With every CD in the last time, there are multiple suspicious positions in each track and every track cannot be verified as accurate (AccurateRip returns another value).
The log then suggests "No tracks could be verified as accurate. You may have a different pressing from the one(s) in the database".
However I think it is very unlikely, as this happened with 4 CDs.

Why is it happening?
Is it possible that it is due to the read offset being detected incorrectly?

Is the extraction nevertheless usable?