This issue is present in the (as of date) latest snapshot 14w29b. This issue can be experienced by loading the seed 1122334455 where the player spawns on a tiny island surrounded by two Underwater Temples. They are quite a few blocks away, but visible from the island. The Guardian laser-beam sound is extremely loud from anywhere on the island.
If this is intended, it is the most annoying new addition to the game. I'll consider it a bug.
Addnig my own comment here. I hope this becomes popular enough for Mojang to look into a resolution soon.
You need to run the server and client in a debug environment to see what breaks. Looking for signs "in-game" won't solve the issue.