https://bugs.winehq.org/show_bug.cgi?id=45361
--- Comment #17 from Alexandr Oleynikov sashok.olen@gmail.com --- NVidia released a new driver version (415.13), and the changelog contains this: `Fixed an OpenGL driver bug that caused the upper bounds of floating-point viewports, specified through the ARB_viewport_array extension, to be clipped incorrectly.` Is this the bug the quirk was made for?