When starting version 1.14.30 in Airplane mode or Data and Wifi turned off the game will not start. I believe this has to do with having a Microsoft Account linked to minecraft and the game checking whenever the app starts. Starting the game with no account attached/ removed it starts fine. 

I have multiple packs installed whenever trying to start offline if that helps. The game does not start into the main menu and just sits on the loading bar before crashing.

*Photo attached is not my photo but an example of what you see before the game crashes.