[Magisk] Artim_96:
What leftovers would that be? I just jumped to a 7.1.1 ROM with preinstalled root and Magisk with phh's SuperUser (previews SuperSU). I removed that with the unsu_UPDATE.zip, restored the boot.img from the ROM zip and only installed Magisk and SuperUser (since any additional module seems to make me loose root). Bootloader is not unlockable.

I made sure to blacklist all apps in Magisk hide that have the same UID as com.google.android.gms as some other apps. I don't have any su file in /system/bin or /system/xbin

Magisk log is about the same as above:

** Magisk post-fs mode running...

** Magisk post-fs-data mode running...

Preparing modules

Bind mount dummy system

Bind mount module items

Enabling systemless hosts file support

Mount: /magisk/.core/hosts

Enabling BusyBox

Mount: /magisk/.core/busybox

Bind mount system mirror

Mount: /system

Bind mount mirror items

** Magisk late_start service mode running...

service: /magisk/phh/service.sh

phh: Live patching sepolicy

phh: Mounting supath

phh: Starting su daemon

** Removing tampered read-only system props

** Starting Magisk Hide

MagiskHide: Update process/package list:

MagiskHide: [com.google.android.gms.unstable]

MagiskHide: Disabling for process=com.google.android.gms.unstable, PID=10960, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms.unstable, PID=19091, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

EDIT: seems Magisk hide and root won't work well together for me (7.1.1, dec patch). Just checked the blacklist, nothing was checked. So re-checked everything necessary and rebooted. Everything was still checked, but no app can use root

** Magisk post-fs mode running...

** Magisk post-fs-data mode running...

Preparing modules

Bind mount dummy system

Bind mount module items

Enabling systemless hosts file support

Mount: /magisk/.core/hosts

Enabling BusyBox

Mount: /magisk/.core/busybox

Bind mount system mirror

Mount: /system

Bind mount mirror items

** Magisk late_start service mode running...

service: /magisk/phh/service.sh

phh: Live patching sepolicy

phh: Mounting supath

phh: Starting su daemon

** Removing tampered read-only system props

** Starting Magisk Hide

MagiskHide: Update process/package list:

MagiskHide: [com.google.android.gms.unstable]

MagiskHide: [com.google.android.gsf.login]

MagiskHide: [com.google.android.gsf]

MagiskHide: [com.google.android.gms.setup]

MagiskHide: [com.google.android.gms]

MagiskHide: [com.android.backupconfirm]

MagiskHide: [com.google.android.backuptransport]

MagiskHide: [com.tellm.android.app]

MagiskHide: [com.snapchat.android]

MagiskHide: [air.au.com.metro.DumbWaysToDie]

MagiskHide: [air.au.com.metro.DumbWaysToDie2]

MagiskHide: [com.roadhousegames.lotb]

MagiskHide: Disabling for process=com.google.android.gms.persistent, PID=2290, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms, PID=2514, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms.feedback, PID=3563, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms.ui, PID=4874, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms.feedback, PID=6369, UID=10013

MagiskHide: Unmounted (/sbin)

MagiskHide: Unmounted (/magisk)

MagiskHide: Unmounted (/system/xbin)

MagiskHide: Unmounted (/system/etc/hosts)

MagiskHide: Disabling for process=com.google.android.gms.feedback, PID=8693, UID=10013

MagiskHide: Disabling for process=com.google.android.gms:car, PID=8890, UID=10013

MagiskHide: Disabling for process=com.google.android.gms.feedback, PID=9352, UID=10013

MagiskHide: Disabling for process=com.google.android.gms.unstable, PID=10649, UID=10013