Submitted by WatchPug
EIP712MetaTransaction.sol#L102-L114
Otherwise, when the concrete contracts initializer function (with a initializer modifier) is calling EIP712MetaTransactions initializer function, it will be mistok as reentered and so that it will be reverted (unless in the context of a constructor, e.g. Using @openzeppelin/hardhat-upgrades deployProxy() to initialize).
https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/v4.5.1/contracts/proxy/utils/Initializable.sol#L50-L53
See also: https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/releases/tag/v4.4.1
EIP712MetaTransaction.sol#L102-L114
See the implementation of openzeppelin EIP712Upgradeable.
https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/v4.5.1/contracts/utils/cryptography/draft-EIP712Upgradeable.sol#L28
Change to:
0xca11 (Rolla) confirmed, resolved, and commented:
