Thanks for reaching out. As described above you want to remove the box near the mouse cursor, correct?
This appears when you select the select tool form Adobe Acrobat/Reader. It is a design behavior and there isn't much that can be done in this situation.
You may use the Adobe wish form to file a feature request with the product team - https://www.adobe.com/products/wishform.html
kindly please rlease some patch to remove these cursors.. just cant be with it.. until then.. you lost a customer. i am moving to sumatra pdf or some other which is not distracting /pain on my eyes . adobe is over for me just because of this cursors design forced on me.