Operating system and graphics card
Windows 7 64Bit
GeForce GTX 780
Broken: 2.76.11 2ecd67e
Worked: 2.76.5 296d125
Short description of error
When adding a boolean modifier, the recently added option "Use BMesh" is gone.
Exact steps for others to reproduce the error
In the default startup scene, select the cube and add a Boolean modifier to it. As you can see, the "Use BMesh" option is not present. Adding a second object for a proper boolean operation doesn't change this.