I'm willing to cut a line in two parts with QGIS.
So I enabled Snapping and I wanted to use the Split Features tool, like I've seen anywhere: one first left click and then another left click on the vertex I choose in order to draw a red line and then right-click to finish the process and split the line.
But it doesn't work properly!
The first picture is what I do with the split features tool, and the second is what I get.
Could someone please explain to me why I'm obtaining that?