There is 1 instance of this issue:
https://github.com/open-dollar/od-contracts/blob/f4f0246bb26277249c1d5afe6201d4d9096e52e6/src/contracts/proxies/actions/CommonActions.sol#L118
In the function _exitCollateral(), users can experience loss of funds if the wad amount is smaller than the decimals representation in the denominator.
The below code snippet is from the CommonActions.sol contract is inherited in the BasicActions.sol contract. This _exitCollateral() function is called when the freeTokenCollateral() function in the BasicActions.sol contract is called. This function does the operation below based on the decimals of the ERC20 token being used. In case the numerator i.e. the _wad amount is smaller than the denominator, the final _weiAmount rounds down to zero. This can lead to loss of funds for the user who tries to exit with his collateral.
