Hi Swee,
I think what you are seeing are some Pen interaction improvements that were made in the Fall Creators update.
**Scrolling with pen.**In the effort to create a more intuitive pen interaction on Windows, we are emphasizing natural and direct manipulation of content with pen. You don’t have to “hunt and peck” for scrollbars or frequently switch between pen and touch when navigating; now you can scroll content directly and fluently as you would with your finger.
**Selection with pen.**We also revised selection with pen by giving it more control over the selection process. Not only are we showing selection grippers whenever text is selected via pen, but also are allowing for a consistent and fast selection of content – text, objects, or ink—by dragging the pen while the barrel button is pressed.
For example, if you are in Edge or a Store app you can now select text by quickly double tapping a word and then dragging the selection grippers to adjust the words highlighted OR you can press and hold the pen's barrel button while you highlight the desired text.
Hope this helps,
Greg