I have problems with Minecraft on my new Tablet Lenovo Tab 4 Essential 7" Android 7.0 and this tablet has ability to format (convert) Micro SD card to Internal Storage, and I just bought last day a fast 8GB Class 10 SD Card just to use it as aditional Internal Storage. And I downloaded Minecraft 1.6.0.8 beta on my tablet and transfered it completely to the SD Card and transfered worlds from my Android phone to my new Tablet and started playing.  

When I exit the game completely, not just close it with home button, and then open multitasking menu and enter Minecraft again from there sometimes it just goes black screen for 10-20 seconds and then just restarts and bricks my SD Card, I mean formats and I lose all my data, games, literally everything and I again need to format it to internal storage.. Never happened to me with any other game.. BTW I just tested Minecraft version 1.6.0.8 beta version cause I just got this tablet yesterday.. Its very annoying and I lost my 1 year old world so u get the point of my anger.. Please consider fixing this problem.. And if you want I can try to record this happening so you can easily fix it too.. Good luck and Cheers!