@torgo
Integrity check the db

https://github.com/strawberrymusicplayer/strawberry/wiki/Database-integrity-check

Sometimes Strawberry does not pick up changes done in different tag programs, you can use the touch command in a terminal on the files to trigger re-scanning those songs.
Original year should show the same as year if the tag is empty.
I tested tagging original year on a FLAC file here, and it is working here. I used KID3. But I had to touch the file for it to be picked up.

The resume playback on start should work if you close Strawberry while a song is playing, then reopen Strawberry.
I'm not sure if it would work on system startup.

It is preferring lyrics from metadata, if that's found then it won't search for lyrics, but if the lyrics in the metadata is empty then it will search. So you should be able to just paste in the lyrics in the tag editor and the next play it should use those.
Unless you are using an older version it should work. I just tested it here now. Make sure you use the latest version 0.6.13 (or a newer development build).
btw: I'm a huge Tom Petty fan.