Perhaps don't be too quick to name the blame Leo, because it may be something else.

Try this:
Right-click on the task-bar and select one of the below. Then click on the RealBand item that you believe is giving you issues, or <Alt><Tab> through the items, reviewing any screens that me be expecting some user input. Maybe you can coax the problem window looking for some input from you to the front.

It's possible that it was expecting a response from you when you then clicked on something else, leaving it in some sore of limbo.

And remember, we're just users, like you.

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