I don't know what might be causing that behavior. There may be something wrong with the file. For that sort of "unexpected behavior," it's usually best to contact the support staff directly. You can do that here: https://articulate.com/support/contact/case
Here's something you can try: Change all the "jump to slide" triggers to "jump to scene" triggers. A jump-to-scene trigger ensures that the program will go to whatever the first slide is in the indicated scene. In other words, the trigger doesn't have to be edited if you change what the first slide is.
