This behavior also shows up if you highlight the entire line of a subtask and then backspace (Shift+Home, Bkspace). It shows a smaller arrow and space char (highlighted), which requires an extra Bkspace to clear.
This behavior also shows up if you highlight the entire line of a subtask and then backspace (Shift+Home, Bkspace). It shows a smaller arrow and space char (highlighted), which requires an extra Bkspace to clear.