https://bugs.kde.org/show_bug.cgi?id=475711

            Bug ID: 475711
           Summary: Selecting colors outside Krita window picks wrong
                    colors or coordinates if used on a screen with UI
                    scaling set to something different than 100% on
                    Windows settings
    Classification: Applications
           Product: krita
           Version: 5.2.0
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Color Selectors
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

SUMMARY
***
Using the "Select a Color" dialogue box or using a shortcut to invoke the
screen color picker (to sample colors from outside the canvas) picks wrong
colors or coordinates if used on a screen with the UI scaling set to something
other than 100% in Windows settings. 
Currently I use a 4k drawing tablet, but it's somewhat small so I have to set
the UI scale to 200% in Windows screen settings, but that breaks the color
picker tool when I try to use it outside the canvas. Here's a link to a video
showing it happening:
https://www.youtube.com/watch?v=LXzOdq1d4oI&ab_channel=MatheusDias

***


STEPS TO REPRODUCE
1. Setting UI scale (not resolution) to something other than 100% on Windows
screen settings
2. invoking the "Select a Color" dialogue box and click on the color sampler
3. Try to pick a color outside the canvas area

OBSERVED RESULT
Color sampled is completely off and sometimes transparent

EXPECTED RESULT
The color gets sampled from the place where the user has clicked

SOFTWARE/OS VERSIONS
Windows: 10
Krita: 5.2 (I observed this issue in many other past versions as well)
ADDITIONAL INFORMATION
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