Just happened to me. I’m glad you guys are aware of it and have it on your To-Fix list. I might delete the sentence and then add it back in and see if that fixes the problem.
Ok – so the ## appeared when I was working on my laptop, but I couldn’t edit it out there. However, I was able to on my tablet and deleted the two ##. Then I went back into the story on my laptop and they were gone.
I hope this helps people in the future, and I pray that LingQ fixes the bug soon. (By the way, I love LingQ! Just want to add that so that any LingQ employees looking at this know that their hard work is very much appreciated!!! Keep up the great work!)