Created attachment 118213 [details]
Image of the frames in my version of Krita.

SUMMARY
I updated my KDE neon packages yesterday and rebuild Krita. The timeline docker's frame cells are now huge compared to the krita-4.2.0-pre-alpha-be454f9-x86_64.appimage, and cannot be made smaller.

No idea if anything can be done about this.

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SESSION: 20 Feb 2019 14:44:03 +0100

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Krita

  Version: 4.2.0-pre-alpha (git 2baeb78)

Qt

  Version (compiled): 5.12.0
  Version (loaded): 5.12.0

OS Information

  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: linux
  Kernel Version: 4.15.0-45-generic
  Pretty Productname: KDE neon User Edition 5.15
  Product Type: neon
  Product Version: 18.04

OpenGL Info
 
  Vendor:  Intel Open Source Technology Center 
  Renderer:  "Mesa DRI Intel(R) UHD Graphics 620 (Kabylake GT2) " 
  Version:  "3.0 Mesa 18.2.2" 
  Shading language:  1.30 
  Requested format:  QSurfaceFormat(version 3.0, options QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::CompatibilityProfile) 
  Current format:    QSurfaceFormat(version 3.0, options QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 0, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile) 
     Version: 3.0
     Supports deprecated functions true 
     is OpenGL ES: false 
20 Feb 2019 14:44:09 +0100: Importing application/x-krita to application/x-krita. Location: /home/wolthera/Wolthera_temp/writing/HP/riddle_doodle_2.kra. Real location: /home/wolthera/Wolthera_temp/writing/HP/riddle_doodle_2.kra. Batchmode: 0

Hardware Information

  GPU Acceleration: auto
  Memory: 7725 Mb
  Number of Cores: 8
  Swap Location: /tmp

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Operating System: KDE neon 5.15
KDE Plasma Version: 5.15.0
KDE Frameworks Version: 5.55.0
Qt Version: 5.12.0
Kernel Version: 4.15.0-45-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7,5 GiB of RAM