Hmm, I tried again now and I can no longer reproduce it. For what I can tell it happened right after you make a selection. Instead of the greenish overlay the entire screen would turn to black for a sec. It happened a lot during the storm as well
I'll let you know if I manage to reproduce it again.
There is a new full version with the intended finale and progression that you can download. I think the issue was a html issue and our game had A LOT of text which html did not enjoy. Thanks for playing and helping out tho!