I don't know this OWNR wallet but as hosemary confirmed to be able to restore Segwit address types from OWNR in Sparrow, I would assume that OP did something wrong with script type or derivation path for Segwit address types during restore in Sparrow.
Unless OP has changed the derivation
psthpath manually in Sparrow, there shouldn't be any problem with the derviation path.
I could generate the same addresses as OWNR wallet in Sparrow using standard derivation paths.
m/44'/0'/0' for legacy wallet, m/49'/0'/0' for nested segwit wallet and m/84'/0'/0' for native segwit wallet.