Test Studio's clicking and typing steps come in two varieties: regular and simulated clicks. You can flip between the two by going into the Properties menu for the respective step:
A regular (non-simulated) click/typing is an action that is injected directly into the DOM of the page. This has advantages - it's faster and more reliable. It will work even if you run the test on a locked desktop. But it's fundamentally different from a real user clicking/typing on a control.
And the disadvantage is that it will not trigger any events that are associated with the control in question.
So there you have it: whenever your click/typing steps don't seem to be doing what they're supposed to do - try flipping them to SimulateRealClick=true. It will help a lot of the time.