But it did, I came here from an encrypted Fairphone Open OS 
.
Before I installed LineageOS for the first time, I only wiped the phone and hoped for the best, but upon first booting after installing LineageOS the encryption complained about my password being correct but the data being corrupt, hence my formatting of data (mentioned in my FM Radio post above) before I installed LineageOS again and it worked.
Anyway … I now formatted data again and restored a TWRP backup from before trying to encrypt and currently MyPhoneExplorer is restoring Internal Storage (needs some time because of GBs of downloaded Osmand maps, any form of upcoming FP3 could use USB3.0 
).
Will perhaps have a look at the OTA thread and this old possible workaround mentioned in the bug report discussion later.
Edit: Oh, look who ran into something similar before … Perhaps forgetful me should try that again.