Ok, I could:
- not reproduce in Safari on mac (that's why i left that unconfirmed earlier)
- but could now reproduce in Chrome on PC
So supposing that you were using Safari on PC...
Debugged that, and found that it's a bug of webkit, which is basis of safari and chrome !
Filed that to webkit bugtracker as bug 20969: Windows *only* (works fine on osX): select a dropdowns don't fire the click javascript event.
There is no quick fix unfortunately, but I implemented a workaround for next CB 1.2 version.
As this is not a CB bug, but a windows bug affecting webkit, i'm leaving this thread here, but as said, next release will workaround this problem.
Thanks for reporting and insisting