When set to [Truncate: First] the construct circular fillet command will not accept the second element if it is a reference file even though it does not need to be modified. If set to [Truncate: None] will place the fillet however the first element must then be manual modified.
I also see this as WAD. But it would be nice to truncate the first element to the second from a reference. Once the second element isn't modified. This one has my vote! Regards
José