Andy,
Welcome to/from RIC
I have finally been able to reproduce this blank home screen issue with some sort of repeatable steps, it's intermittent, but I think I have traced the cause. Most likely you looked at the Lookback area.
Here is how I can reproduce it, or make it happen "sometimes"
-The app has to be resumed from suspended state
-Go to the Flights, I click the + to add a flight, then click cancel
-I then go into the Lookback, tap one of the tabs at the bottom
-Tap the top left button to return to the home screen
I don't know exactly what from the above is required or not, but I can make it happen 80% of the time by doing this. All that it takes to fix this issue is to clear Logbook Pro from the suspended apps then start it again, nothing else needs to be cleared.
I think it's an issue with the animations, the page curl in the Lookback tabs that's causing this. I've only been able to get this problem to occur after causing a page curl in the Lookback by changing tabs within that area.
I don't know exactly yet how this will be resolved, my first effort will be to remove the animation and see if that prevents it. The usual programming steps, start tearing things down until you can no longer repeat the issue.
Minor, but exists, I will get it taken care of in the 1.1 update. So far nothing critical, thankfully, so no need for a 1.0.7 update, 1.1 will be a doozy!
Very much looking forward to it! Neat stuff to come. Some of your suggestions of course too, as always!
Keep the feedback coming.