Merging of bent tube doesn't provide what I'm expecting...

[The-Rocky]

Greetings,

I created a bent tube, Selected "Bore cuts as holes when grouped". I then went down to Bend Radius and moved the bar as far to the left as it would go. Made a good sharp 90 degree turn.

I then duplicated it and rotated the new one 90 degress, dropped to workplane as part of it was below the workplane, aligned the two so the corners meet. This gives a three way corner. I then grouped them. The top of the pipe is no longer hollow, it's filled. Why? In transparency mode you can see the it's hollow up to about the last 1-1.5 mm or so. Obviously I can split it and get rid of that and the problem is solved.... but I'm curious why it did this.
Corner Test-bug-report.zip

[henmedia]

@The-Rocky thanks for the file, it showed the cause straight away: it's a bug, not something you did. When the bore of a bent tube cuts as a hole, layerling makes the opening as a second, thinner bent tube. For a tube that stands up or is tipped on its side, that opening was set a little off along the pipe, so at one end it stopped just short of the open end and left a thin cap. Your duplicate is tipped, so its top end was closed. Fixed for the next version: the opening runs out at both ends however the tube is turned.

[henmedia]

@The-Rocky this is out now in layerling 1.146.0: the opening of a bent tube runs out at both ends however the tube is turned, so your tube merges as expected.

[The-Rocky]

Nice - thank you.