Can't delete matching label

Is anyone experiencing a glitch with the matching quiz question? There seems to be something wrong with the bottom left choice. When I add text to both the left and right, only the text for the right side shows up on the slide view. The left still displays "Click to enter a choice". And when I delete the text or try to delete the choice, only the right side deletes. The left stays and I can't delete it. I tried over and over again to add a choice and delete it, and I've closed and open the program a bunch of times it's still an issue.