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Oh, but this only hide the textbox.
What I mean is a option to completely disable "double click to hide dial"

So whenever I double click the speed dial page, nothing would happen. The speed dial page is not hidden and stays the same.

Because I rarely use this "power off" feature and I always accidentally hide my speed dial page.

What I mean is to disable this page/feature. So that when I double click on the speed dial page, this page won't come out.