If an end portal generates with 12 eyes in it, it is impossible to use it.

Seed + coordiates please.

Eyes only spawn one time out of 10, so finding a portal with 12 eyes is close to impossible. This screenshot was taken in a modded version, with the only change being this probability. You can close this as "Cannot reproduce", but it may reopen one day, if someone finds a seed with 12 eyes in one of the portals.

Why is this "resolved" ? The bug report is closed (and I understand that decision), but the issue itself isn't resolved. Can you please change it to "closed" ?

Invalid is our standard resolution for modded clients/servers.

The bug is still present (even if nobody knows how to reproduce it) in the vanilla version, so this can't be "resolved" as Invalid. "Cannot reproduce" would be a better wording.

@@unknown: Since this issue is now fixed I have edited your comment to remove seed and coordinates and I will set this ticket to public again.

@redstonehelper I'm going to change the attached image too.

Didn't even notice that, sorry!

Out of curiosity, why is such a seed considered sensitive information?

It is up to the individual who found the seed how (and if) they would like to publicly share it.