Expected

The floating action button used to create a new post is shown when there is at least one site to add a post.

Observed

The floating action button used to create a new post is shown when there is no site to add a post. See the screenshot below for illustration.

Reproduced

0. Create account with no sites.
1. Go to Sites tab.
2. Notice Create floating action button is shown.

Tested

Google Pixel 2 on Android 8.1 with WordPress alpha-91