So me and my friends were on my realm. Survival, no cheats, etc. We spent days preparing for the end. I venture out to find the stronghold. Upon finding it, it was in a Plains Village. I dug down, and fell into the stronghold. The problem is, there was barely even a stronghold. It was just a staircase that leads to the library. We dug around for about an hour, finding absolutely no sign of a portal, or any other natural rooms found in a stronghold. This has happened on 2 occasions, the first which we were told it was patched in the last bug fix. If it helps, the stronghold was located partly in a ravine under the village with an abandoned mineshaft beside it.