dropdown shows when clicking to activate window

[CapSel]

Steps to reproduce:

• click inside edit field
• press escape to close dropdown
• click outside of browser
• click inside browser below edit field
• "random" value has been selected

This becomes a major problem for me when I have a grid of fields with timepicker and I'm constantly switching back and forth between windows.
Why is this dropdown re-activated on window activation?

[jonthornton]

I'm guessing this is some kind of onfocus bug related to the browser window regaining focus.