OS X 10.10.4, AMD 5770
Broken: 2.75 official (and 2.75.2 15c301f)
**Short description of error**
Using the bevel modifier's limit feature causes some edges to "pop out of place" and move slightly, messing up shading.
**Exact steps for others to reproduce the error**
See attached bevel_warp.blend file. Play with the limit settings on the bevel modifier, notice how "angle" limit mode causes the mesh to distort. If you view the model from top-ortho and toggle the modifier visibility on and off, you can clearly see it's not a shading artifact and the modifier is actually moving edges when it shouldn't be.