Photoshop: Eye dropper doesn't sample outside document window

In my case it is n't. Open a image first. Start with the eyedropper tool on the image and drag the mouse outside Photoshop. Windows 8.1 Adobe Photoshop Version: 19.1.3 20180323.r.293 2018/03/23: 1163761  x64

Howdy John,

I believe this changed when we added the HUD to the color picker.  It also better respects standard software conventions.  As above, activate the Eye-Dropper tool, click within the PS window so the color HUD appears, now drag outside the PS window.  There you go.

Have a good one,
David

What graphics card brand do you have? Similar issue reported here: https://feedback.photoshop.com/photoshop_family/topics/photoshop-eyedropper-tool-cant-sample-colors-from-outside-the-program-nvidia-drivers-conflict and here: https://forums.adobe.com/message/10230354#10230354