Based on the information in this post:
where it is quoted as:
Grid and TreeList: Both widgets integrate a responsive pager ,which automatically adjusts on different screen widths and provides the ability to define which columns to be hidden on small view ports. This makes them more flexible for mobile web usage.
It makes sense that you are talking about both the responsive pager and also the minScreenWidth feature. I am trying to get minScreenWidth working on the TreeList, but am unable to do so and in the docs it is not mentioned.
Sounds like a feature that has not yet been implemented and is very misleading. Please let me know what the case is.