https://bugs.kde.org/show_bug.cgi?id=403411

            Bug ID: 403411
           Summary: Diverse Pointer Mapping Problems Due to KDE scaling.
           Product: krita
           Version: 4.0.4
          Platform: Appimage
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: romulu...@gmail.com
  Target Milestone: ---

Created attachment 117562
  --> https://bugs.kde.org/attachment.cgi?id=117562&action=edit
glxinfo output

KDE scaling started to produce diverse displacements problems in krita canvas.

STEPS TO REPRODUCE

1. Set KDE scale to 1.5

OBSERVED RESULT

1. Window positioned somewhere to the right of the dual display setup,
displacement happens to left.
1. Window positioned somewhere to the left of the dual display setup,
displacement happens to right.
3. Some times it stay mapped to some point in canvas, pressing it sustain it
until brush is released.
4. Irregular displacements depending on screen position.

EXPECTED RESULT

1. No displacement, brush synchronized with mouse pointer.

SOFTWARE/OS VERSIONS
Fedora 29
KDE Plasma: 5.14.4
Qt: 5.11.3
KDE Frameworks: 5.53.0
kernel: 4.19.15-300.fc29.x86_64

xinput version 1.6.2
XI version on server: 2.3
libinput 1.12.5


ADDITIONAL INFORMATION

Screen 0: minimum 8 x 8, current 7680 x 2160, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected primary 3840x2160+3840+0 (normal left inverted right x axis y
axis) 600mm x 340mm
   3840x2160     60.00*+  59.94    50.00    30.00    29.97    25.00    23.98  
   2560x1440     59.95  
   1920x1080     60.00    60.00    59.94    29.97    23.98    60.00  
   1600x900      60.00  
   1280x1024     60.02  
   1280x800      59.81  
   1280x720      60.00    59.94  
   1152x864      60.00  
   1024x768      60.00  
   800x600       60.32  
   720x480       59.94  
   640x480       59.94    59.93  
HDMI-1 connected 3840x1620+0+270 (normal left inverted right x axis y axis)
677mm x 290mm
   2560x1080     60.00*+
   1920x1080     60.00    59.94    50.00    29.97    60.05    60.00    50.04  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1280x720      60.00    59.94    50.00  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       75.00    59.94    59.93  
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)

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