FAB button does not scroll in ion-content if button is in sub component

[mburger81]

Ionic version: (check one with "x")
[ ] 1.x
[x ] 2.x

I'm submitting a ... (check one with "x")
[ x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or http://ionicworldwide.herokuapp.com/

Current behavior:
I create a FAB button at the bottom and the right in TestComponent which has some text and a lot of
to create a scrollable side. The FAB button but does not scroll down with the scroll view as expected for the button. If i declare the FAB button in the same Component where the ion-content is anything works, but if I load a subcomponent in the ion-content in this case for TestComponent where is my FAB button, the FAB button does not scroll

Expected behavior:
I hope this is not expected so and not by design. The FAB button always has to scroll into his ion-content also if it is in a subcomponent.

Steps to reproduce:
I created a plnkr for you
https://plnkr.co/edit/U8QJ0A?p=preview

and here is a screenshot

at the beginning:

after scrolling:

[jgw96]

Hello! Thanks for opening an issue with us. I am going to close this issue as a duplicate of #9279 as that issue and this issue is caused by the same underlying bug.