Hello 
I’ve added to the button the create-topic id so it will use that style now. I’ve also noticed a missing point…this button is appears to anon too. I’ve fixed it. FIX: Hide Compose button for anons and adds create-topic id to it by VaperinaDEV · Pull Request #4 · VaperinaDEV/discourse-compose-center · GitHub
I think this is an issue with user status in core. I have already a topic about it here: User status stops working for admins but I have to investigate it more… If you navigate to a topic or somewhere then it will appear again. So this issue is not related with this theme component.