UPDATE I've tested on different tenants, it seems to only work in those that isn't a first release tenant.
It doesn't even work with the default built-in webparts that have been served by microsoft.
Could someone please check this as-well?
Suddenly my projects are not working at all in preview mode when in the tenant context. It renders absolutley ok in edit, but as soon as I hit "Preview", everything disappears from the screen. In Chrome, I can see the components in the react console and data is changing?
No code change. This started yesterday.
I also created the default helloworld to see if that worked, but sadly no.
Anybody experienced this?
[10:18:43] Project test version: 0.0.1
[10:18:43] Build tools version: 3.2.7
[10:18:43] Node version: v6.11.2
[10:18:43] Total duration: 6.2 s