No, on the offline.

Sending from a P2PKH to several P2SH-P2WPKH (with the Change Address Type settings left as auto), I'd assumed that the signer would send the change to P2SH-P2WPKH as that was what the Preferred Receive Address Type was set to (and the Change Address Type set to auto).

When it actually went to a P2SH-P2PK, I tried the 'Force a script type' and it was there that Segwit was greyed out.