My device:
Xiaomi RN8T stock A11 MIUI
Magisk Canary 25209
Latest Shamiko public release (for proper root hiding]
[LSPosed Hide My AppList, but not needed for this app]
This app is detecting OEM unlocking when enabled in Developer options (even if enabled with developer options disabled)... With the above setup I get:
View attachment 5872335
With OEM unlocking disabled:
View attachment 5872341
... It's not detecting USB debugging or Developer Options itself...
I have disabled OEM unlocking on my device and rebooted and all is fine... While I believe this is normally safe with the
important exception of Magisk use with relocked bootloader (ie. with custom keys set to allow relocking with custom mods incl. Magisk etc), I'm not certain of this... Others may like to verify the safety of disabling OEM unlocking with normal (unlocked device) Magisk use...
The App can be used by disabling OEM unlocking before a reboot however, so you can always enable it again before a reboot...
Hope this fixes your issue!

PW