Polygonal Viewports - Unable to select multiple grips

Posted earlier about a problem selecting multiple grips on anything.

This problem is just "specific" to polygonal viewports.

If we create a polygonal viewport or create a closed polyline object and clip a viewport to it, we can not

select multiple grips on the viewport by holding down the shift key.

We always have been able to do this.

Anyone know why we can not do this now?

Autocad 2014

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