solang: Cross contract passes wrong `AccountId` to `seal_call` on substrate

Please refer to this posting for further information: https://substrate.stackexchange.com/questions/202/calling-the-function-of-an-other-contract-in-solidity

I posted an answer there with the results of my debugging results: Solang somehow passes the wrong AccoundId to seal_call. I verified that by debugging output in the node.