>>>Hi Sergey,
>>>
>>>I still see this "fanky" behavior. E.g. it works two or three times, but then it doesn't. Were you able to simulate it?
>>>
>>Adding above code to MouseUp seems to fix it.
>
>Not entirely. Try clicking couple of times, you'll see, what I mean. I'll play with other Mouse events, but it's becoming too cumbersome.

As I said, it seems to fix it for me regardless how many times I click on textbox.