Mixed type lessons keep ending after each slide

I already upgraded to the latest version, and this issue (it was an old issue that I discovered) is still around. To replicate this problem, do this: Create a mixed type lesson Add slides Add multiple choice questions Set feedback option to after each question Then when you click on next, it ends the whole lesson, saying I have already completed the course, even though I have just gotten through the first slide. Please look into this! Thanks! Ken