I have a document library with versioning enabled (major only). We are experiencing an intermittent issue where while saving a document, a previous version of the document is saved as one version higher than the document that was just saved, both with the same modified date and time. Here's what an example version history would look like:
Version Number Document Content Modified Date
-------------- ---------------- -----------------
5.0 "b" 12/11/19 10:20 AM
4.0 "d" 12/11/19 10:20 AM
3.0 "c" 12/10/19 11:05 AM
2.0 "b" 12/09/19 10:55 AM
1.0 "a" 12/08/19 11:32 AM
In this example, when updating document version 3 with content "c" to content "d", version 4 gets created when the document is saved and simultaneously a version 5 is created with the version 2 content.