See https://bugs.jquery.com/ticket/3827 and 1fb2f92

This fix should also include radio buttons. Currently if you use jQuery to trigger a click on a radio button, event handlers get called before the checked state is updated. The release notes for 1.9.1 when the above change was included say it was changed for radio buttons even though it wasn't.

Yes, we appear to have a problem in

Hi there.

I think we understand what you mean, but would you mind providing a test-case on http://jsbin.com/ or on similar resource? So it would be clear what behaviour you expect

Such test case will also be necessary for a PR. Would you like to work on this, @mbest?

Here is the jsbin that was linked in the Knockout issue: http://jsbin.com/yinare/4/edit?html,js,output

This will be backed out due to the regression seen here. We will re-land with a fix for that regression in 3.3.

Also see #1367

Seems the same issue would apply to trigger('click') on checkboxes (code that has existed since 1.9.1).

Right, but that's not a regression since 3.1.1. We plan to address that as well in 3.3.

@gibson042 is working on this, but it will not make it in the 3.3 release.