someone knows this shortcut?
I don’t even see a menu option for undoing a corner in my 5.0.0 version.
In the development version (the future 5.1) you can press backspace and it deletes the previous corner in the polygon’s history.
SOLVED–> Installed KiCad 5.0.1 and selected “Modern Toolset” in “Preference” menu. We have a better control over shape of zone and we have that shortcut (it’s enough press delete).