EndBulge display bug in Rhino 7.6

EndBulge documentation is here: EndBulge | Rhino 3-D modeling
It says: “Surface end bulge editing works with Zebra, EMap, CurvatureAnalysis, and DraftAngleAnalysis.”

In reality it turns all of them off. If the backface display setting is custom material, the EndBulge sometimes temporarily flips the surface inside out.

this has been fixed in an upcoming service release.