I updated my wallet w/ no problems, my coins were not lost through a wallet update, they were lost through mining pool.
Lost coins are not Dev. issue, dev doesn't run mining pool.
If I understand things correctly, the pool can not know that the blockchain/network had forked at some point. Your hashes continue to generate blocks, but later they are orphaned by the majority when the new updated wallet version is out. The reason of fork is definitely in the domain of the developer, not the pool admin.
Some signs of the fork that can help you and/or pool admin to spot the problem are unusually low difficulty, unusually low network hashrate shown on the dashboard, or a sudden enormous increase of number of mined blocks and coin earnings.