Submitted by shw
The chainId information included in the TransactionManager is immutable, i.e., it could not change after the contract is deployed. However, if a hard fork happens in the future, the contract would become invalid on one of the forked chains because the chain ID has changed. See TransactionManager.sol L73 and L79.
Recommend adding a function that allows the admin to set the chainId variable if a hard fork happens.
LayneHaber (Connext) acknowledged:
