Same with my k30 5g. Everytime i will use location (using maps, share it), my phone will reboot to twrp or not reboot at all (stuck at the first boot logo).
But with Bluetooth, it's fine with my device. So, I think the bug is with location.
The latest stable 12.5.2 is awesome in smoothness and in battery as per my observation.
Though, the LED Light when charging and when there is notification is still not fixed.
Please do fix the LED light. Thanks in advance.