Patrike,
I'm not sure which recent update caused this issue, but if you're a GPU miner and have the SHA-256 algorithm disabled for obvious reasons, you can no longer select bitcoin as an option for a coin in the wallet balance. I had to re-enable the SHA-256 algo in order to get the bitcoin balances working again.
Hal
Thanks for your question. I think you might have disabled SHA-256 in the Options dialog, Algorithms setting, so it will be globally disabled. That behavior has always been there.
If you only want to remove SHA-256 from the profit switcher for example, please right click on the miner and select Edit Profit Profile where you can disable SHA-256.