Errors dxf poliline

I have dxf file exported from internet service to dxf. In this file i'm see bugs when zooming polilyne. How to fix line in LibreCAD?  How do I check that the line is closed?

test_svg_to_dxf.dxf



zooming

well, which version of LibreCAD do you use?  It might be that one of versions had similar issue with polylines.

I've tried you dxf on 2.2.2 alpha - and I can't see artefacts there, it seems that the polyline is fine, it's smooth and there are no breaks.  

May you test the same file using dev snapshot (located there https://github.com/LibreCAD/LibreCAD/releases/tag/2.2.2_alpha-latest)?