Keychain for everything?
In wallet when you have logged in with posting key, you can claim the rewards just fine. But when you have keychain on your browser, wallet forwards that to the keychain when it shouldn't because you already have the posting key.
Keychain shouldn't be the default option for actions in the wallet. Every thing pops up the keychain by default.
Even when you have logged in with posting key.
It should be possible to do the transaction in other ways too.