Bug: UI Lagged momentarily = Massive Tech boost

I was clicking to upgrade my weapons.  The UI lagged.  I clicked it again.. the UI lagged again.. I double-clicked.

Next thing I see, my quanta is negative several thousand.

The good:  Quanta available tracked properly (it went negative, couldn't upgrade for a good while)

The bad:  I had a massive tech advantage that I hadn't earned.

Screenshot from graph at end of game showing spike: http://imgur.com/KOop7bj