Place a sticky piston then add an item. Make a very short redstone loop as in picture 2 and let it spam. After about 15 seconds the piston will stop, the block will be seperated and be counted as survival. You can now transfer (very inefficiently) blocks to creative.

Pic1 before: http://imgur.com/yEvv9kZ
Pic2 after: http://imgur.com/mpirCHu

Cannot reproduce on 1.7.

Looks like vanilla fixed it. Please open a new ticket if you continue to get the issue

I've been running the circuit for almost an hour and the piston has not stopped...

The block is also registering as "Creative" to me.

Edit: Is your server possibly under too much load? Do you have any messages in the console?

I am pretty sure it does require a (small) lag spike yes. However lag spikes are pretty common on all servers.

At that time the average tps was above 19 though.

Do you get "Failed to update block after 1000 milliseconds" in the console?

Through my testing it took nearly a day and it finally changed to natural.

Edit:

Does build 476 fix the issue?

Yes I do get that error sometimes.

Edit: I never understood what caused it though. As I said before I have an SSD so IO lag should be non-existent.

Does build 476 fix the issue?

Will check and post here.

Sorry someone was still able to reproduce this.

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