Edit rectangle bottom left corner?

Hello,
I created a rectangle using the 2-point rectangle function. I can edit all the corners but not the bottom left corner. Rounding and trimming don't work. What am I doing wrong?
Thanks
Hans

hmm... that's quite a weird behavior indeed...

What version of LC do you use?
May you share the the DXF with such issue?

P.S
1) btw - what do you mean by "edit corner"? Move the point or apply commands to 2 lines that are near to the corner?
2) Are you sure that these lines near the corner are lines, not a polyline?

Hello,
here is the dxf file. I use V2.2.1.2.AbrundTest.dxf

When I create the rectangle with 4 lines, i can edit all 4 corners.