As title said. No matter from the Win or Lose map (Won previous round but got warped to El Nath as well; lost this one), exiting after finishing the Egg PQ will warp you to El Nath if you enter from the FM in Magatia.
UPDATE (since the problem still persists): -Entering from Ariant's FM warped me to Orbis (and Henesys for another person) -Entering from Perion's FM warped me to Magatia -Entering from Aqua Road's FM warped me to Ludibrium -Entering from Korean Folk Town's FM warped me to Henesys (and Ludibrium for another person), but: -Entering from Magatia's FM (once, today) warped me back to Magatia normally -Entering via the Event NPC that's physically in town (Magatia and Aqua Road) warped me back to the corresponding town normally It seems like it has a much higher chance of warping you elsewhere if you entered the EggPQ via FM instead of the Event NPC that's in the town itself, as well as the problem seems to occur more often if you enter the PQ via FM of a town that does not have the Event NPC in town (i.e. Korean Folk Town and Perion).
I had a similar thought but already discarded it since I had never entered EggPQ in Orbis or El Nath on that character, plus my first warping encounter was Magatia FM -> El Nath but I was nowhere near El Nath region on that character since the patch.
I've had the same issue where I would go into egg pq from fm on vic island and it would tp me back to ludi once I'm done, or thru nlc fm and it would tp me back to hene. I personally just find bunnyman in the town directly instead of going thru fm because I've never had this problem when I talk to bunnyman directly