The range selectors in the Annotation Chart work beautifully with a pointing device such as a mouse.
They do not work in a browser on a mobile device (I have tested Android 6.X or Android 7.X) using touch or a stylus (tried with GalaxyNote 5) and Chrome.
Similarly with a laptop computer with touchscreen, the mouse works fine, but I cannot move the display range selectors with touch.
We are working with large data sets so this feature is an important tool to narrow things down to an area of interest to the user.