Storyline Blocks not showing up in Rise Course in Review

Posting here because we had the same issue, and what was even more baffling was that it suddently started for both myself and a coworker within the past 24 hours, on totally seperate Rise accounts. 

The SL block would preview perfectly in Rise, and we'd publish it and it would just be blank - exactly like Phoebe's screenshots show.  It wasn't just one SL block either. We'd make an update to another SL block, publish it to Rise, and now THAT totally seperate SL block that WAS working is now showing as a blank. 

We'll likely have to open a case with Articulate when time allows, but in the interim I just wanted to pass on a workaround that seemed to get our blocks working again. 

We were using Google Chrome.  We know Chrome updates have caused all sorts of issues with Articulate Rise and our LMS lately, so on a hunch, I exported our Rise course in our other browser (MS Edge) and the SL blocks suddently started working again.  I can't say it is a for sure fix, but if you are desperate like we were, try opening Rise in another browser before your export a new zip, and see if that fixes it.  We managed to get all of our "dead" SL blocks working again by doing that.