Need help with nameTag visibility

It doesn't work. I don't know what to say to describe the problem, except for images.
The command was run on the Lush account.

Code:

// onCommand
$sender->setNameTagVisible(false);
$sender->setNameTagAlwaysVisible(false);
$sender->respawnToAll(); // Wasn't necessary
var_dump($sender->isNameTagVisible(), $sender->isNameTagAlwaysVisible());

 

name tag visibility doesnt work for me anymore since 1.2

 

This can be a headache... since then you can't restore players name without storing it at first