Button tooltip not updating

[stfabian]

Hello,

The tooltip of a button does not update its value after the tooltip property of the button changes:

In this example the tooltip always stays "0". The label updates correctly:
https://plnkr.co/edit/y5mbeRjSbFDRTUTsLwJa?p=preview

I am using the "2.0.0-beta.9" version.

Thanks.

[merve7]

We'll work on it and fix for next release.