AC leak, help!

I have a 2005 Georgie Boy Pursuit. I have water leak issues. Last summer, we had a roof leak that stained the ceiling. We had the roof coated and sealed. Now, we went to take it out and the floor exposed under the slide was mush so only the carpet gave any resistance when stepped on. The rear ac is close to in line with the bad floor and the stains on the ceiling run that way. The stain is big, and the camper parks downhill that side. I do not know if the stain is bigger, (I hadn't gotten around to getting the stain out). The floor was solid last summer, after the roof was sealed. Could the rot be from the leak from before then? Or is the roof ac leaking while parked? (No AC running ever.)
Confusing me even more, when we went out on that trip recently, the ac was running the whole time. The ceiling did not get wet where the stain is. BUT, the ceiling directly in front of the ac, about 2 foot away from it (and the coach was half a bubble off- so that was now downhill a bit), had a spot about 9"by 3 inches soaked and dripping ac condensate. It was 90 outside and the drip was ice cold. My sons looked at the ac, and can see no leak. The ac ran all day today, and the ceiling isn't wet. They couldn't find any wet spots. Tomorrow I'm going to lift the back up a half a bubble and see if it drips.
condensate. Any clue why the condensate would drip enough to soak that ceiling carpet? They can't figure it out. Is there a typical problem on these?