I created a project yesterday in SL3 and it wouldn't fully open in chrome; it just hangs at the opening spinning wheel. The same published content opens fine in MS Edge. I'm publishing to HTML5 with flash back up and also tried publishing to just HTML5.
When I open the file through SL360 and publish, everything plays fine in both Chrome and Edge. I also recreated the file in SL2 and it opens and plays fine in both Chrome and Edge. The issue only occurs with my SL3 file and only in Chrome.