Random Fillet results CB 1.0 64 bit

[ChrisCTS]

I'm having fun trying to fillet some shapes ( polylines ) with CB 1.0 64 bit. I have a fully enclosed  polyline
with 6 corners and only 4 will fillet. I have tried exploding and joining the two which form the left top corner
and tried filleting them, but  they still won't fillet. If I draw two new lines at same angle and similar length elsewhere, I can fillet them no problem.
Is there a known reason why the two top left corners won't fillet. I'm thinking it's a bug.
I have had this before on some other polylines but this is the simplest one that it's failed on.
The left polyline is what I'm trying to fillet, the right in the result I get. (2mm radius )
Chris

[dave benson]

HI Chriss

The line won’t won’t fillet, because it is made up of two polylines and
the fillet can not work because the line is to small (not long enough to fillet).

Dave

[lloydsp]

I don't understand why the entire outline isn't joined to be one polyline.  When I think about 'outlines', my mind automatically goes to single, closed polylines as the definition.

Lloyd

[dave benson]

Lloyd I used the file cleaner to find the problem and that’s the resultant pic to
illustrate the problem.

Dave

[dh42]

Hello

Yes and same problem on the left corner, but difficult to see because the points are only spaced about 0.007mm

And you can see that something is wrong because the "number of segments" property show 8 segments instead 6

++
David

[ChrisCTS]

Thank you Dave and David,
I have just figured out you can only see these when exploded, and have been thinking that, because it's one joined polyline it must be good. ( can't see the defects when zooming in on the joined polyline ). I will correct my way of thinking and now know how to check when I have an issue like this in the future.
Not sure how I generated this defect in the first place, could this be a result of joining, when there was a small gap?
Your help is very much appreciated.
Chris   

[dh42]

could this be a result of joining, when there was a small gap?

Yes, probably.

++
David