So I was sussing out the stronghold in MC dungeons when i fell through a gap in a path near the end portal. Instead of respawning, I fell through the map and ended up in some kinda void place. It was like the void in the base game, but the background was light blue. Actually, everything was the same shade of light blue.

I started walking towards the edge. I could use artifacts there. I opened up my map and noticed I was near the edge of where the normal map would be. I kept walking away from the centre, and suddenly my character vanished. I respawned outside the end portal room, in the place youunlock when you collect all six eyes of ender. I hadn't got a single one, so i checked it out.

TLDR: Found glitch which lets me explore the entire stronghold w/o collecting the eyes of ender.

Please tell me if this is a previously discovered glitch or if it is brand new.