I can't pinpoint when it happens, but sometimes the projects all disappear under the Project menu, only to reappear in a few seconds. Is this a known issue?
This is not a known issue at the time. Do you have a strong internet connection? This sounds like it could be refreshing at the time, and if it's a slow enough connection it could look like the Projects disappear for a second.
I would suggest clearing the data for the app, and see if it continues to happen.
I have a 4G LTE phone, but I'm not sure what my connection was like at the time. I'll follow your suggestion anyway and see what happens.
BTW, I love TD and its customer support. Usually a good app has either nice features or great customer support but rarely both. TD definitely has both. Haven't been this impressed by a new development for a long while. Keep up the good work!