[Ss3] Fillet (No Truncate) Won't Calculate "Virtual" Extention

Is this new behavior?

Trying to fillet two lines with no trimming. Lines do not physically intersect, but would if extended. The Fillet command responds with illegal definition unless I allow it to extend the line as part of a Truncate function. I do not think that this was normal functionality in earlier versions. And by earlier versions, my memory goes way back...