@Inkypen Installed 0519 version, here is the logcat, but it only says networkError on downloads, nothing else :/Not an selinux issue then. It's working fine here on LOS and on PE. Go to app info (long press anx icon on launcher and select the "i") clear all storage and try again. If it still doesn't work then I'll need a logcat to try and troubleshoot it.
Kinda sounds like the issue I had early in development when various things work on one boot slot but not the other. Reboot to recovery and flash MIUI 13 firmware again.
Also, why does everyone seem to extract and patch the boot image when trying to install Magisk? Why not just sideload it in recovery?
For future builds the relevant latest firmware will be included in the ROM zip, to avoid all these headaches about firmware version.