I am currently owning a OnePlus 3 64 GB device rooted with Magisk v13.0 (96f8efc) and MagiskSU's systemless root, and using the following ROM, which is based of Android 7.1.2 (Lieanage OS): Resurrection Remix OS (version: RR-N-v5.8.3-20170624-oneplus3-Unofficial), and the build number is: Resurrection Remix Nougat 7.1.2_r17-NJH47B.
I have tried the encryption setting, but it didn't (possibly) go well, as I ended up having short (possibly) 30 seconds soft restarts with my phone after the encryption process completes, and the only way to end this soft bootloop was to do one hard reboot. I also saw some missing apps (such as Maps) after the (faulty) encryption process. Furthermore, and this is the most important and annoying thing I found, is that once I set a password/pattern/pin after the encryption, and add the option to require it after booting, it will not be changed later, even if I changed it later on and added the same option of requiring it on reboot, the first would still persist.
I would like to know if there are steps (and possibly better ROM suggestions) that I could do to achieve full security using device encryption, while still benefiting from Magisk's systemless root that has the option of Magisk hide (using MagiskSu)?
I don't want to expose my data to thieves, as booting into recovery mode would show all my personal information as if I am running the device on root, and with that, you can easily wipe the lockscreen password by deleting the password database.
Really appreciate any help on this matter.