Cannot specify signer account as script hash

[ixje]

The documentation on the signers property of the launch config (https://github.com/neo-project/neo-debugger/blob/master/docs/debug-config-reference.md#signers) states

Properties for a signers object include:

account specifies a wallet account, as a Neo N3 address (such as NViTnvofZYshnqppD6ksCtUzBDn54an5hM), a hex encoded 20 byte array (such as 0xccc907b1d386a52071285e580322a612e508a4f2) or an @ prefixed NeoExpress wallet name such as @alice. The @ prefixed syntax is only supported if the neo-express property is specified. This property is required. If the default values are sufficient for the other signer properties, the account string can be specified directly.

Trying to use the "hex encoded 20 byte array" fails