I am not questioning returns or anything of the sort... I am asking if there is a known bug or a fix regarding the list of Worker IDs.
In total I have ~130 systems so seeing all the IDs to monitor if they are working is important.
You may need to re-start the miners to pickup the workers again to be displayed.
100% accurate.
Its been a bug thats been around ever since the first weeks of zpool when this new exchange pool code was released.
Restarting the miner app; has it pop back up on the list. It is the only solution found thus far, as its a very tough type of bug to track down.
The best way to keep track of your miners is through configuring API access to each one; and a miner control/monitoring utility/os of some sort; which there are many out there.