To reproduce (On Nexus 7 (2012) at least, not sure how to trigger a low memory event on other devices)
- Open Minecraft PE
- Go to Settings
- When the browser for skins shows up, hit the back button
- Once back in MCPE, hit the Multitask button
- MCPE gets placed in background
- MCPE force-closes with this stack trace: https://gist.github.com/zhuowei/e9a43e30ba268dfdf192
It looks like the low memory handler tried to destroy the LevelRenderer, but since no world has been loaded, the LevelRenderer was null and the destructor segfaulted.