Is this normal or a bug (it does not take place systematically):
I believe is it standard for the bibliographic information of an article within a journal or anthology.
I was looking for an explanation: what is the logic behind that behavior?
Here's the logic: We include the "best location" as a tag on all clippings so you can find it again later. This is useful mainly for the situations where you clip from a Bible or other versified resource (commentaries, Josephus, Apostolic Fathers, etc). The article title in such resources usually isn't very useful as a locating scheme (eg, "Chapter 3"), so we automatically attach the nearest location milestone (eg, "Jn 3:16") as a tag to the clipping to help it be found again later. What's actually attached is a reference (so you can find clippings via a search for the reference, eg <John 3:16>) and the tag's text is rendered in the "short" form (eg, "Jn 3:16").
In some journal resources such as this one, there are bibliographic citation milestones for each journal article, and that is the automatic tag that is getting added to your clippings. The "short" rendering of that kind of milestone is the article title, so that's what you're seeing here.
I agree that looks pretty silly, and in the case of bibliographic milestones is duplicate information, since the full bibliographic citation is on the back of the card. I'll file a design case for omitting these automatic tags in this situation.
Hope that helps, thanks!
Thanks Eli for the helpful explanation.
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