Does anyone know if the Interest bug for Ledger Wallet has been fixed yet?
No not yet, they are still trying to recruit a dev with the necessary skills.
thanks.. and would you know if those holding KMD in Ledger will get interest from the time we have held them
As I understand you are getting interest, even if you are holding your KMD on an exchange, just make a transaction after x time and the interest will be added to your wallet.