Yep...we've had both issues. The rear windown of our 179 started leaking in June on our last trip. The inside track had water in it. It's at the dealer now to be repaired - and that is a whole other story! The water under the fridge probably comes from the outside vents. If the water is sprayed upwards into those vents in like say ......in a car wash.....then it can leak in under the fridge. With us the water caused a slight stained the bottom of the dinette seat. Not a big deal but annoying.
If you open the outside vents you'll see how the water gets in. I wiped it up there and then got under the fridge and wiped that up as well.
You probably should also check underneath the unit as well for possible water entry. The one other thing you could/should check is the caulking along the bottom molding that runs along outside the trailer at about floor height.