Do you know, że… ?
Gap nazywana potocznie “fasolką” jest wbudowanym narzędziem mającym pewną cechę. Well, you can't have that shape prune, because he will lose his inner relations.
The lack of relations results in a complete disintegration of the sketch and in my opinion it has no use in this form.
Therefore, such a cut should be avoided and you can use instead Selected contours in the operation Extrusions.