Hairpin - Dangling handle

When a Hairpins is in Edit Mode, the handles are visible, including the one to change the heigth.

If the Height property is changed in the Inspector, the "Reset value" button is activated.
If it is used to reset the Heigth to default, the handle dos not move together with the lines of the Hairpin.

As soon as any handle is clicked, the dangling handle snaps back into place.