Bug when cutting an object using Intersect Faces command

[tr3topflyer]

Rather than to reexplain the whole issue I will refer you to this thread where others confirmed that this is in fact a bug.

A disk shaped wedge

Are you dealing with raw geometry (edges and faces) or with groups and components? Any elements you have in a group will be isolated. If you try to erase an element that is part of a group, you’ll simply erase the entire group. You’ll probably get conflicting advice on this point, but personally, I don’t start creating groups and components until I need to. As long as I’m doing basic geometric forming operations intended to produce a single, integral object, groups just get in the way. Everythi…

Two experienced users of sketchup verified that this seems to be a bug.