Yes, I was using linux4's build when it was still unofficial. Now I'm currently on lineage_beyond0lte-userdebug 11 RQ3A.210705.001 23930c2bf7
I also have another identical device (S10e) with the same ROM (for testing) and has the same problem.
Not sure when and how this happened, before I could use my USB data cable (a good one, tested on another device) to connect the S10e to the PC and trasfer files, now all the options are greyed out and only the charging happens. Might have something to do with SeedVault backupping on the external MicroSD?