Licensees are reporting random crashes at startup, with randomly different messages, but it seems that all have a "low-address null pointer dereference". The licensee believes that the phone sometimes is taking too long to load and Android is killing the app which is causing the issue. This also seems to disconnect the debugger, making the true source difficult to track down.
For debugging I made a very simple map (floor plane and light) as the startup map. Then after a few seconds delay I'm opening the level I actually want to see. The app now starts every time and crashes only when the delay ended and the "open level" node is fired. I then reduced the content of the important map to hopefully load it faster. It then worked more often without crashing. But randomly crashing still.
There's no existing public thread on this issue, so head over to AnswerHub just mention UE-99329 in the post.