https://bugs.kde.org/show_bug.cgi?id=415673

            Bug ID: 415673
           Summary: Blending mode selection for Layers and Brush: large UI
                    scaling with initial not-RGB images.
           Product: krita
           Version: nightly build (please specify the git hash!)
          Platform: Debian stable
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: Usability
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Created attachment 124769
  --> https://bugs.kde.org/attachment.cgi?id=124769&action=edit
'normal' UI with RGB image

SUMMARY
This is seen on all versions for the Linux appimage and the Windows portable
.zip packages from 4.2.6 up to the latest Dec 28 4.3.0 prealpha packages.

After starting/restarting krita, if the layers docker blending mode selector is
opened, or the brush blending mode selector is opened then the vertical scaling
of the blending mode selector is affected by the image being RGB colour space
or not-RGB colour space (e.g Greyscale or CMYK).
(See attached screenshot images.)

For an RGB image being the first image on which a blending selector is opened,
the scaling is normal and compact. For a not-RGB image being the first image on
which it is opened, the vertical scaling is expanded.
This scaling is then maintained no matter what colour space image is opened or
selected from multiple open images. (See attached screenshot images.)

The layers docker blending mode selector and the brush blending mode selector
can be made to have different scaling (which is maintained throughout the
session) depending on the colour space of the first image that they are used
with.

Example screenshots are attached for the Layers docker blending mode selector.
The Brush blending mode selector has identical (and independent) behaviour

STEPS TO REPRODUCE
See Summary description

OBSERVED RESULT
See Summary description and attached images

EXPECTED RESULT
The blending mode selector UI should always be 'compact'

SOFTWARE/OS VERSIONS
Krita

 Version: 4.3.0-prealpha (git 3f0ff1a)
 Languages: en_GB, en, en, en_GB, en
 Hidpi: true

Qt

  Version (compiled): 5.12.5
  Version (loaded): 5.12.5

OS Information

  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: linux
  Kernel Version: 4.19.0-6-amd64
  Pretty Productname: Debian GNU/Linux 10 (buster)
  Product Type: debian
  Product Version: 10

OpenGL Info

  Vendor:  "NVIDIA Corporation" 
  Renderer:  "GeForce GTX 750 Ti/PCIe/SSE2" 
  Version:  "4.6.0 NVIDIA 418.74" 
  Shading language:  "4.60 NVIDIA" 
  Requested format:  QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer,
swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile 
QSurfaceFormat::CompatibilityProfile) 
  Current format:    QSurfaceFormat(version 4.6, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer,
swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile 
QSurfaceFormat::CompatibilityProfile) 
     Version: 4.6
     Supports deprecated functions true 
     is OpenGL ES: false 

QPA OpenGL Detection Info 
  supportsDesktopGL: true 
  supportsOpenGLES: true 
  isQtPreferOpenGLES: false 

Hardware Information

  GPU Acceleration: auto
  Memory: 16039 Mb
  Number of Cores: 8
  Swap Location: /tmp

Current Settings

  Current Swap Location: /tmp
  Undo Enabled: 1
  Undo Stack Limit: 18
  Use OpenGL: 1
  Use OpenGL Texture Buffer: 1
  Use AMD Vectorization Workaround: 0
  Canvas State: OPENGL_SUCCESS
  Autosave Interval: 360
  Use Backup Files: 1
  Number of Backups Kept: 1
  Backup File Suffix: ~
  Backup Location: Same Folder as the File
  Use Win8 Pointer Input: 0
  Use RightMiddleTabletButton Workaround: 0
  Levels of Detail Enabled: 0
  Use Zip64: 0

Current Settings

  Current Swap Location: /tmp
  Undo Enabled: 1
  Undo Stack Limit: 18
  Use OpenGL: 1
  Use OpenGL Texture Buffer: 1
  Use AMD Vectorization Workaround: 0
  Canvas State: OPENGL_SUCCESS
  Autosave Interval: 360
  Use Backup Files: 1
  Number of Backups Kept: 1
  Backup File Suffix: ~
  Backup Location: Same Folder as the File
  Use Win8 Pointer Input: 0
  Use RightMiddleTabletButton Workaround: 0
  Levels of Detail Enabled: 0
  Use Zip64: 0

ADDITIONAL INFORMATION

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