Razor tool is cutting the wrong clip.
This happens from first version of kdenlive (on Windows .. i don't know on Linux )
when on timeline there are more that 1 clip at a specific time (2 video track + audio track... or 2 audio track...) the razor tool is cutting the last selected ( selection tool ) and not the clip where the mouse button is pressed.
maybe is necessary to make that the razor tool automatically select the clip where the mouse pointer is located (without pressing buttons) , or also.. change the selected clip when pressing left mouse button before doing any action.
Attached a clip about this...]
i think whis is the last issue that can compromise first-time users experience... (all other issues was fixed, very very good job, greetings to the Kdenlive team) ... 19.12 release will be very nice.