Submitted by Ruhum, also found by 0xMirce and 0xRobocop
The vaults feeRecipient can be updated through the setFeeRecipient() function. Only the owner of the contract (VaultController) can call it. But, the VaultController contract doesnt implement a function to call setFeeRecipient(). Thus, the function is actually not usable.
Since the vault creator wont be able to change the fee recipient they might potentially lose access to those funds.
setFeeRecipient has the onlyOwner modifier which only allows the AdminProxy to access the function. The AdminProxy is called through the VaultController.
The VaultController doesnt provide a function to execute setFeeRecipient(). Just search for setFeeRecipient.selector and you wont find anything.
Add a function to interact with setFeeRecipient().
RedVeil (Popcorn) confirmed 
