hide slapper nametag

Hello, developers!
I'm moving my server to 1.2 and noticed that I cannot hide nametags of slappers(statues) anymore.
On version 1.1 everything worked but it looks like

Code:

$entity->setNameTagVisible(false);
  and
 $entity->setNameTagAlwaysVisible(false);

has no effect now!

Even when I try to hide nametags manually by runing command "/slapper edit ENTITYID namevisible 0" and I get message from Slapper "Name visibility has been updated", but nametag remains visible!
How hiding nametags works now?
Thank you in advance!

 

Mojang messed up nametag visibility again

 

use a command
/slapper edit id name
name empty

 

As @AshBull mentioned, since the 1.2 update nametags are messed up once again.

 

Yep, It will be a temporary solution.
However, I want to see a nametag when staring directly at the statue

PHP:

setNameTagVisible(true);
setNameTagAlwaysVisible(false);