Hidden to Normal Interactions not working!

So, I'll give you a bit of background here; I've created and published for stakeholder review an induction to the company course - the main issue is coming from a company timeline, where I'm the using the Object Intersects X and changes to state Y, and the objects no longer change from hidden to normal.

The bizzare thing is, this was working absolutely fine before the christmas break and I'm the only person that uses and updates these files - so I can't figure out where I'm going wrong!

I've attached an NDA(ish) safe document for people to look at the back end and offer any advice on this...(please!) - slight warning, there are many, many triggers involved here!

Has anyone encountered this issue in Storyline 360 yet?