Without Assistive Access activated, the screen on my iPad does not turn off

Hi My case concerns the use of Assistive Access. When Assistive Access is activated and you receive a call, the following happens: The screen lights up and large buttons are visible to answer the call. But after a few seconds the screen turns off and turns black. You then have to touch the screen for it to light up and show answer buttons. It is confusing for a demented person and also for anyone. In normal mode, i.e. without Assistive Access activated, the screen does not turn off, and that is how I want it even in activated Assistive Access. Don't you agree that it's crazy? Or is it me?

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