P: White balance dropper target location is offset on high-DPI Windows devices

[FeedbackCommunityMember]

There appears to be a bug affecting all recent versions of Lightroom on high-DPI Windows devices. It affects both CC and standalone versions, up to and including the current version (2015.6.1).

The issue is that when using the white balance dropper tool in the Develop module, the target location Lightroom uses does not correspond exactly to where the point of the dropper is located. Specifically, it seems to reference a position about 5 or 6 millimetres above the point of the tool.

The issue also affects the manual defringe dropper in the Lens Corrections panel. Other local develop tools seem not to be affected (brush, spot healing, HSL/Color/B&W picker, etc.).

To be clear: the issue affects Lightroom when the device is used in standard desktop mode with a regular mouse as the pointing device. It is not an issue with the touch screen, the pen or Lightroom's touch mode.

The problem is described in detail with screenshots here (in the original post and in my reply):
https://forums.adobe.com/message/8942657

It's also discussed briefly here:
https://www.reddit.com/r/Lightroom/comments/4wlf4i/lightroom_dropper_bug_on_surface_pro/

[Péter Kollányi]

It still didn't solve the problem for me. It is now 05-12-2022. So the problem is quite annoying. I also reported it here, but no response was received:

https://community.adobe.com/t5/lightroom-classic-discussions/mouse-click-inaccuracy-in-the-straighte...

[Péter Kollányi]

Nothing happens in the case? Are there so few of us affected subscribers that Adobe refuses to fix such a basic error for our sake?

[Péter Kollányi]

Another four months and nothing happens. 😞

[Péter Kollányi]

I also bought a 27" ASUS PA279CRV 4K monitor in addition to my previously mentioned laptop with a 4K monitor. On this monitor, it is enough to set the monitor scaling to 150% in Windows 11. Unfortunately, the positioning problem also occurs on this monitor. .