LineageOS 16.0 was arm64, but LineageOS 17.1 became arm, I've noticed it while installing Open GApps

Hi, before anything i should say thanks for this beautiful ROM.
I like it but it has some important problems (maybe just in my case)

1. Some times all sounds are muted without any soft option to fix it (look like speaker module does not work any more) until soft restart.
2. After some reboots call action got problem! Outgoing call activity does not show(But call will launch and i can speak and listen), Incoming call activity does not show and mean i can not answer or reject it. (even incoming call does not log into call logs)
3. This ROM make me wonderful today. (look like) It automatically run factory reset, mean all applications data cleared and rebooted automatically and after reboot lineage OS welcome screen shows, But all applications keep and does not uninstall anything. Some thing make me more wonderful is Screen lock does not removed and keep!

I used this ROM and like and love it, its beautiful and have many feature that I like, But have some important problems that I reported about at above. I like to reinstall it after these problems fixed. Thanks to all Developers of this ROM and thanks to everyone who helped me in community of this ROM.

Pressing the Home key when the device is in sleep mode does not wake it up. It seems only the power button can be used to wake it up.
I believe this is a small and easy fix somewhere in the code, but i don't have enough knowledge in the system to be able to do it myself.
Thank you.