If the initializer is not executed in the same transaction as the constructor, a malicious user can front-run the initialize() call, forcing the contract to be redeployed. Most other initializers in this project are protected, but this one appears not to be.
https://github.com/code-423n4/2022-04-backd/blob/c856714a50437cb33240a5964b63687c9876275b/backd/contracts/AddressProvider.sol#L53-L57
