in 20201223-e20c1e0f15-win_x86, deleting a note with ctrl-x clears the note window, but when selecting another function or other residu the notes are still in the field. Same is true for ctrl-a and 'delete'. The note window seems empty but in reality it is not.
Pressing space and deleting space in the 'so called empty field' will however clear the field, Typing any other character and then deleting it will leave that character behind. Somehow a space and then delete space does not leave the space behind.