I got 'false' but I can confirm the seed I imported is ledger's and I've selected "p2sh-segwit (p2wpkh-p2sh)".
If you recovered the wallet in Electrum directly from the seed, then you didn't answer to a very important question, I'll re-post it.
Have you ticked "BIP39 seed" in the 'options' under the seed? Yes?
It's important that you've checked that checkbox.
See the step4 from here, the Options button.