I have duplicated sketches after projection

Hi, I have a trouble that seems to be a program issue.
When I project 2 sketches into a single plane, each projected sketches are multiplied.
Since the current version of Shapr3D doesn’t support merging sketches from the other plane, I have to often do project, however, every time I project them, sketch lines are duplicated and I have to clean those noises.
Could you check the video I’ve recorded?