Hi Xyguma,
indeed it seems to be the very same problem! I do not see IMEI anymore, only “unknown”.
It would be a big coincide if our hardware randomly broke at the same time?
Either it is a software issue or this ROM is responsible somehow for a hardware defect?
EDIT: It might be some driver issue? I also notice a stronger battery drain than usually even though the phone is just lying around.
EDIT2: I looked on XDA in the thread of LineageOS 21.0 unofficial ROM (which is the base for this IodeOS ROM as far as I understood) and there are four similar reports:
https://xdaforums.com/t/rom-lineageos-21-0-unofficial-1-1-2024-06-16.4658694/post-89574260
https://xdaforums.com/t/rom-lineageos-21-0-unofficial-1-1-2024-06-16.4658694/page-10#post-89641501
https://xdaforums.com/t/rom-lineageos-21-0-unofficial-1-1-2024-06-16.4658694/post-89643468
https://xdaforums.com/t/rom-lineageos-21-0-unofficial-1-1-2024-06-16.4658694/page-10#post-89645072