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I have a self-intersecting line that I tried to split using the Split Features tool in the Advanced Digitizing Toolbar. The problem is that when I try to split the line at one point, the line splits at every point where it crosses over itself.

This line was originally a tracklog generated in WGS 84 using a Garmin GPS. I imported it into QGIS in GPX format, and saved as a shapefile.

The line is styled with a red marker at the first node. Before splitting at the blue circle: enter image description here

After splitting:

enter image description here

What's going wrong here?

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The saga tool "split lines with lines" in the QGIS processing toolbox can split lines properly even if they have self intersections.

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