Yo developer, I figured out the sequenced of the crash.
This bug only happens during party boss killings, as long there is a party involves. Individual boss kill does not activate this bug.
When the boss kill a party member, and that party member click again to respawn. People in that party crash and their application closes. Not all phones, and not on PC too. But majority of them crash and have to re open the application. If the member that died did not click and respawn but remain dead. No one in the party crashes. It only happens when the dead party member click to respawn.
It doesnt happen to all people, but some. There is one time i test it out with 5 party members, boss killing. 1 died. If i remain unrespawn, they continue in the game, but once i click respawn, the other 4 crashes, and re open the app. some remain in the same place, and some gets respawn to the town where they set up their respawn spot.
Some phone has the error reporting pop up when they crash, and some dont. In my case, mine doesnt and i use a Nokia E72. So now i use PC, sometimes i use the phone.
I hope this would clarify the bug more in details, everyone find it very annonying as it crashes. :(
Please fix this bug for the next update.
Thanks, ;)