Old bug report: Image Editor, Painting: crash when texture was visible in Material or Texture preview. Was caused by paint code freeing mipmaps. Now replaced with a mipmap tag (to be done again), and a new mipmap function that doesn't re-allocate.
Old bug report: Image Editor, Painting: crash when texture was visible in Material or Texture preview. Was caused by paint code freeing mipmaps. Now replaced with a mipmap tag (to be done again), and a new mipmap function that doesn't re-allocate.