Strange error in "High Quality" viewport...

[ActionArt]

I've run into something odd when trying to use the HQVP. When certain things are activated I get a black bar on the top and all transform tools are offset from their proper locations. Here's an example:

First image, just HQVP, not additional features active. Second image, anti-aliasing active (note black bar on top). Third image, DOF active.

Anyone else have this happen? I've tried every Nvidia setting and also the shader profiles in SI preferences with no results. I've tried the last 4 versions of Nvidia drivers. I don't remember having this when 2013 first came out. I have a GTX 280. Any ideas?

[ActionArt]

Well, after some more experimenting, it seems it only happens in the camera viewport and the culprit is "clip drawing to film gate" setting in the display prefs. De-activating this cures it. A bug worth reporting I suppose.

[angus_davidson]

The last few NVIDIA Drivers (for quadro at least seem to not be up to their normal great standard) either that or we just got a bad batch of cards.