I notice this issue when implementing BBQr and working with ColdCard Q.
When ColdCard export a segwit p2wpkh Electrum Wallet, the path would be something like m/84h/0h/0h, and so will be imported into BlueWallet.
When making transaction with the imported wallet, the generated psbt will have path begins with m/84/0/0, missing h or '.
Such psbt can't pass ColdCard's change fraud detection due to the wrong path.

iOS 26.0.1
BlueWallet v7.2.0
self test passes
ColdCard Q firmware 1.3.0

If I replace h with ', this issue can be solved, generated psbt can be signed with ColdCard
simon300000@a768a26