The problem
I had the game open the whole day (~6 hours) and the human event ended, but when viewing the event in game it still thought it was active until I went to it, where it said the event has ended. Once i closed and re-opened the game it updated correctly.
Steps
Seems to be the following:
- Open the game a bit before an event ends
- Let the event end
Unfortunately i failed to get an image/video of this because i am stupid.