I have placed down some end crystals in the frontier overworld, and they wont explode. I tried to destroy them with TNT, fire arrows and punching them, and they cannot be destroyed. I'm not sure if it is something to do with the new protection update, but the end crystals are now invincible. Could this be fixed?
My guess would be to prevent griefing? They may be similar to a creeper explosion rather than a TNT explosion so they can't be logged?