When doing some animation or simply painting, when I select another color the brush itself stops working.

And when I create another layer the mouse icon changes to the resize window icon randomly.


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Krita
  Version: 4.0.0 (git 4ba5152)

OS Information
  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: darwin
  Kernel Version: 15.6.0
  Pretty Productname: OS X El Capitan (10.11)
  Product Type: osx
  Product Version: 10.11

OpenGL Info 
  Vendor:  ATI Technologies Inc. 
  Renderer:  "AMD Radeon HD - FirePro D700 OpenGL Engine" 
  Version:  "4.1 ATI-1.42.15" 
  Shading language:  4.10 
  Requested format:  QSurfaceFormat(version 3.2, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, colorSpace QSurfaceFormat::ColorSpace(DefaultColorSpace), profile  QSurfaceFormat::OpenGLContextProfile(CoreProfile)) 
  Current format:    QSurfaceFormat(version 4.1, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, colorSpace QSurfaceFormat::ColorSpace(DefaultColorSpace), profile  QSurfaceFormat::OpenGLContextProfile(CoreProfile)) 
     Version: 4.1
     Supports deprecated functions false 
     is OpenGL ES: false