I don't know how to reproduce this, but I'll report it anyway just in case.
I don't know which version I have installed, it may be from the master branch or it may be from the app store (I wish it showed the version somewhere!)
Here's what happened:
I don't believe I'd used the app recently, so it might have been the first run since a phone restart
I opened the app while offline
The "TodoLists" screen was blank, it showed none of my lists.
I forced-quit the app
I re-opened it, and it gave me the "facebook login" screen.
Since I was offline, I couldn't login, so I was basically stuck.
I don't know how to reproduce this, but I'll report it anyway just in case.
I don't know which version I have installed, it may be from the master branch or it may be from the app store (I wish it showed the version somewhere!)
Here's what happened: