FP4 - get_unlock_ability reset to 0

CalyxOS version: 3.3.2
Build number: SP2A.220305.013.A3.22303020

I've noticed that on my FP4 installing CalyxOS somehow reset get_unlock_ability to 0. The bootloader is still unlocked, but the toggle to enable OEM unlocking in developer settings is disabled and greyed out.
The phone started on stock Fairphone OS, was then reflashed with the factory images provided by Fairphone and after that flashed to CalyxOS, no other OS in between, but it has been rooted with Magisk before.
Before being flashed to CalyxOS, get_unlock_ability was still at 1 and there wasn't any issue during installation.

I acknowledge that this probably isn't an issue exclusive to Calyx, others have reported similar issues with /e/, iode and even stock FPOS on the Fairphone forum. I only wanted to reach out, to see if the Calyx devs have some insight on why this might be happening, since Fairphone support just slapped a warning in the docs and hasn't shared any details with the community so far.