Hi Dennis,
Sorry for the delay being caused.
Could you please provide us more information on how the behavior of the desired scrolling might be.
#1)Whether the control should have Scrolling directions
#2) Whether the Textbox will occupy the whole window (in length wise)
It would be very helpful to us if you provide more information on this like a Screenshot/Brief description, so that we could further analyze on this.
Please let us know if you need any further assistance.
KindRegards,
Karuppasamy P