I ran my server today with a friend. We decided it'd be fun to run a survival world, so I booted up a new one (with Multiverse) and we began playing, only to realize that he couldn't break or place blocks. Each time he punched something, as soon as it broke it went back to the way it was, no drops or lag. However, that didn't mean he couldn't interact with the world at all. We tested a few things, and it turned out that he was able to punch entities, sleep in beds, play music discs, click levers, all of that jazz.
I scanned through some of the already-made posts here, and tried most of the recommended. He's been opped, we're in survival/creative mode, I don't have the EssentialsX plugin, and it has nothing to do with the spawn protection because we've gone thousands of blocks away from spawn and turned it off to no avail. I requested another friend logged on for testing, and he had the exact same issue (keep in mind that none of this is happening to myself). The issue is the same no matter what world we're in, and restarting makes no difference. Any ideas?
