[Bug] When blind signing is disabled and user attempts to sign typed data v4, unknown error displayed

[vivek-consensys]

Build: v12.11.0

1. Install MM Extension
2. Recover from SRP
3. Add hardware wallet (Ledger Stax)
4. Add Ledger account from account list
5. Launch MM Test dApp
6. Connect with Ledger account
7. Disable blind signing on Ledger device
8. Sign typed data v4
9. Verify error

Expected:- Result: Error: Keyring Controller signTypedMessage: Error: Ledger: Blind signing must be enabled

Actual:- Result: Error: Keyring Controller signTypedMessage: Error: Ledger: Unknown error while signing message

[danjm]

Is this issue present in v12.10.1?

[vivek-consensys]

@danjm yes it is present in the v12.10.1 but not sure if it is a release blocker?

[dawnseeker8]

hi, @danjm i dont think this is release blocker since ledger device will display warning message that you need to enable blind signing.

After you following ledger screen steps to go to settings and enable blind signing, and trigger typed sign v4 again, the transaction will be successfully go throught after you accept the risk of blind signing warning in ledger.

However, i will have a look how to return meaningful error message in metamask extensions side.

[danjm]

If the issue is present in v12.10.1, then it is not a release blocker for v12.11.0