Yesterday I was on sm7 looking for the end portal and when I reached the location where the ender eyes lead me to and dug down, I didn't find the portal. Is there a bug related to this or was it just something I did wrong?
it should have led you to a griefed stone brick/cobble/wood/dirt/stone room with no roof and lots of holes in the ground
When EMC updated to 1.7 structures such as strongholds were "corrupted" and the eyes of ender now go to a random spot. This only happens in the frontier though, if you try in the wastelands it'll work.