Pressing backspace during creation of a new item very soon after a previous item was added will select the previous item #2
Description
When at least one item exists, and there is no text in the TextboxList that isn't part of an already added item, pressing backspace will select the last item in the list so that it can be deleted. However, if a new item is being typed and backspace is pressed within some short amount of time after the previous item was created, focus will leave the textbox and the previous item will be selected, even if there is other text.