I managed to install plain LineageOS (noticed the microg builds only afterwards, sigh. Already done the work to get F-Droid privileged extension working, not going to re-do it now).
I would like to re-lock the bootloader to get my phone into a secure state that I can use for the next 5 Years without having to do any hackeroonies. However the phone refuses to boot into LineageOS and I have to unlock the bootloader again to fix this. Is there any known fix? If not, do you think this will be fixed at some point in the near future?