Week Count not increasing

So, this is an odd one - on a fresh compile, I started a new game as per normal, and noticed a few weeks in that the display was till showing it was week one.

Where it gets odd is, if I fire up another new game, this doesn't occur - I quickly fired off a couple new Arcologies, skipping the intro, and the weeks progressed as normal.

free-cities-20201125-224120.save