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Infragistics controls started appearing in editor

I'm not sure if this is related to the new SDK release, but the following infragistics controls started appearing when I tried adding columns to my datagridview (the ones that start with Ultra). I don't have an infragistics license, so just wanted to report.

EDIT: I just noticed if I try to add a control it works fine, but if I reset Visual Studio then it complains it cannot find the references.

This seems like some weird bug with Visual Studio.