Parenting does shrink the object?!

Loony

Hi,

I am... very confused, I NEVER had that before (maybe a restart will fix it, no idea).

I only try to move the bath brush into the hand by parenting it, so it will move with the hand, just a normal workflow for me, but... when I move the brush to the left hand, it shrinks O_o.

What is going on there, how can I stop that?

Before parenting:

After Parenting:

 

How it looks in the scene tab:

 

 

Should not even the translation not change, just because I parent it?

Edit: okay tested on a other char, it seems like to be a problem because I locked the sizes O_o....