When IntelliJ loses focus, the Grails View adds a double highlight

In the grails view, when I have a grails project selected and then switch focus off of IntelliJ and back, the grails view will now show two things highlighted: the item I had selected before AND the top item in the list. I made a brief recording of it here: [http://recordit.co/aw8Xqlrmfj](http://recordit.co/aw8Xqlrmfj)

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*Imported from [IDEA-137654](https://youtrack.jetbrains.com/issue/IDEA-137654) · Type: Bug · Votes: 0*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Start by reproducing the focus change with a Grails project selected in the Grails view, using the linked recording as context. Trace the view's selection handling around IntelliJ losing and regaining focus; done means returning to IntelliJ leaves only the previously selected item highlighted.

Written by the indexing model from the issue text.