Perhaps a Server-side issue?
@SuperGeniusZeb Ah, I see. Forgive me, I'm not one to use redstone often.
If I am correct that is intended, that is not a matter of the power emitted it is an effect of BUD powering since PE does not have BUD power it works differently.
I was unable to replicate the issue.
Remains powered
After performing the bug listed above, place a redstone lamp behind the observer block and you will find it stays powered.
It may be because you are in Creative mode items won't be consumed.
The totems max stack size is 1, so it couldn't be an issue unless they are spawned in.
I had a similar issue, with just regular maps, exact copies in fact. One didn't respond while the other worked fine, I wasn't able to replicate the issue again.