i8n Sync Autotitle with empty tokens displays Token Value

Hi I got a multi language installation... ENG & DE

My Autotitle consists of Make (Tax) Model (tax) Highlight (field)

The Highlight Field is not sync`t and differs for each language.

When I save my nodes in der current language and my Highlight Field is "Empty the TOKEN Value is inserted into the other language Node Tilte as a token field instead of leading it blank.

The original save Node has the Correct Autotitle.

Say said this only happens when the Highlight Filed is empty.