https://bugs.freedesktop.org/show_bug.cgi?id=106594
--- Comment #3 from Kai kai@dev.carbon-project.org --- I was able to check for this behaviour on a system with an integrated Intel GPU (HD Graphics 530 (Skylake GT2); PCIID: 0x1912) on Mesa 18.0.3 and it didn't show these glitches.
The OpenGL error line ("==OPENGL==> [location 'Bitmap::ConvertToTexture Before Texture Creation'] error code 0x502 (invalid operation)") is shown with the Intel GPU as well.