Last modified: 2013-01-23 15:08:51 UTC
The entityselector changes the selected item from the selected one to the first one having the same label when the selector looses the focus. This is often the previously selected item, but you can reproduce this behaviour by creating a number of items with the same label and different descriptions.
Change I6f00a497: (bug 43867) Prevent entity selector widget from resetting entity
Change I5b3c26e1: (bug 43867) Entity selector: Setting entity on mousedown event
Verified in Wikidata demo sprint 29