Yeah, when Dustin pulled the AC unit out of the window to check, it looked like the silicone holding that little plastic duct had given way. We relocated the drain hole further toward the rear of the unit, remounted the AC with slightly more tilt to the rear, and added a little more insulation around the sides while we were at it.
It didn’t seem to be leaking after a few hours of testing last night. We’ll see how it goes.