Strange behaviour of the date range selection for the content versioning for a container

Several strange behaviour in the Versioning engine :

• Modified and validated twice the same container, and I have version V1, V2 and V4. What happened to V3 ? (see screenshot 1)
• If I select a date range, the previous version whcih was named V4 is now named V3 (screenshot 2)
• Date range seems not to apply, I select revision for the same day between 14:08 and 14:20 and I see revisions after 14:20 (screenshot 2)
• If I open the date selector again after having set a date range, the selected date in the calendar is November 18th at 16:14, whereas my previous selected date was August 27 at 14:08. It would be nice that the date in the calendar is the current set date (screenshot 3)