Oneplus 6 has the same issue, game crashes from time to time and it's not at any particular game mode or tab, it can happen anywhere, anytime, arena, battle nodes, character menus, shops, events...it s messed up that such good phones have been getting zero support from the game developers
For what it's worth, I don't think this problem is limited to Oneplus devices. I'm seeing it on my Oneplus 5T, but before I got this phone I saw it on my HTC One (M7) as well.
I wish we had more tools to debug stuff like this from our side ...
I'm still getting it:
1. At least every other day in Squad Arena, during the first turn
2. Every time I open a zone in TW, unless I had just immediately restarted.
3. At least once after each TB phase starts