So I'm driving home this arvo and it starts chucking down with rain. Turn the wipers on as usual and everything seems fine, then all of a sudden the driver's side wiper crashes into the passenger side wiper, jamming them together

Me and the Mrs thought this was actually quite amusing, another little Fiat quirk I mumbled.. then I realised I literally couldn't see further than the end of the bonnet as the rain was so heavy Pretty scary stuff. Managed to pull over and waited for the rain to stop before cruising home to fix it (turned out the driver's side wiper was loose and was flopping around a bit too much).

Ahhh coupe ownership - there's never a dull moment

Pollen filter replaced recently?

If so, it's possible the people who replaced it, didn't tighten the wiper arm after having had to remove it to get to the old pollen filter.

Yep I think this might be what caused it. Hopefully it's all sorted now and I won't have any more surprises...