The application will not close after finish reading if
the focus is not in it.
Repro:
1. Select some text
2. Copy the text to the clipboard.
3. Start SpeakClipboard.
4. Click on some other window (for example the window
you copy the text from).
5. Wait for the application to stop reading the content.
Result:
SpeakClipboard visible.
Expected:
SpeakClipboard to close itself.