Feel free to use this kind of shit-script to keep rewards running. (And yes rewards are still incomming but if your mn hangs on block for several hours, you need to restart mn from wallet again, to get rewards again.
@AggroHead Thanks for sharing. M$ solution required.
As for rewards stopping after a few hours, does not appear to be the case. Masternode stalled 13hours ago but has continued to receive rewards every hour or so.