Using a Storyline button to send completion to for Rise course

Try removing the trigger that exits the course. That should keep the course active so Rise can recognize that the block has been completed. 

Also, when you publish the Storyline file to Review 360, you need to set that to track via the completion trigger. So verify those publishing settings. 

Here's one more thing to consider: I suggest you have the Storyline block include a summary message. Put an actual CONTINUE button under it that requires the user to complete the Storyline block. Then add a brief closing message after that. When you test that, you'll know that Rise "sees" the Storyline completion trigger when that final CONTINUE button is enabled.