So do we always have to manually set the height for __blaze-root?

[Orbyt]

I was debugging an issue and released I couldnt see my UI because __blaze-root was being rendered by default with a height of 1. Why is this?

Adding

#__blaze-root {
    height: 100%;
}

seemed to fix the issue, but I've seen some demo projects using BlazeLayout and FlowRouter where they dont do this. So is this usually required? If not, why would it render with a height of 1?

All the templates rendered inside had a height of 100%.