1170580 - click events not delivered with trivial CSS class change

Status: UNCONFIRMED

(Core :: DOM: Events, defect, P4)

Description

[Michael Enke]

Attachment: ff-error.html

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0
Build ID: 20150525141253

Steps to reproduce:

I created a toggle-button with some div elements.
Padding makes the button appears to go down when pressed (see attached file).


Actual results:

In case I click very close below the "button"-text or very close to the right or bottom edge of the outer div, I get mousedown and mouseup events, but no click event.
In other places click event is delivered.
It's possible to widen the "bad" area by increasing the padding in #t_inset.active (e.g. x10)


Expected results:

I should get the mousedown, mouseup and click event.
If I comment out the t_inset.className in attached file, problem does not happen.

It works ok in Chrome and IE.