With an external USB screen attached, mouse-pointer becomes extremely large, and clicks occur inaccurately

Originator:me
Number:rdar://27684703 Date Originated:03-Aug-2016
Status:Open Resolved:
Product:OS X Product Version:macOS Sierra 10.12 Beta (16A201w)
Classification:UI/Usability Reproducible:Always
 
Summary:
When I use DuetDisplay or an external USB screen, Sierra renders a *gigantic* mouse-pointer, and does not generate clicks where expected on-screen, when the mouse is on that external screen.

Steps to Reproduce:
1. Attach USB display, or install the ‘DuetDisplay’ app and attach an iPad or similar device
2. Move mouse-pointer over onto the desktop of the second screen

Expected Results:
The mouse-pointer transfers smoothly to the external display, at a consistent size; and clicks of the mouse apply to UI elements below the tip of that mouse-pointer

Actual Results:
The mouse-pointer renders at about half the width of the entire screen(!), and clicks are not remotely accurate to the visible tip of that giant pointer.

Version:
macOS Sierra 10.12 Beta (16A201w)

Notes:


Configuration:
External screen attached

Comments


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