When you use JQuery to attach to multiple mouse events (�mousedown�, �mouseup�, and �click�) in an HTML Web Resource, only the first one in the event sequence gets its handlers fired. The rest of the sequence does not complete.
When you click on a mouse button, there are 3 distinct events that should be sent through the browser�s runtime, in order:
1. mousedown �The button is pressed down.�
2. mouseup �The button has been released.�
3. click �The button was pressed and released.�
The way this bug manifests, is when more than one of those events is being watched�at least by jQuery, anyway. (I haven�t taken the time to see if browser-native event handlers are not affected in this way.) By attaching a handler to both the �mousedown� and �click� events, we expect that a click will trigger that handler twice.
It does; in every other browser, but not within the Outlook client. This is actually incredibly easy to test:
Click on me to see the event pipeline.
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