After updating to version 2.2 (46), the "allow" button for git credentials from the keychain is broken

After updating to version 2.2 (46), Sourcetree is constantly popping up an alert asking if it can use the git credentials from my keychain for github.com. Nothing happens when I press both the "Always Allow" button and the "Allow" button, but the "Deny" button still works. After I press "Deny", the popup comes up again and I press "Deny" again and it leaves for good. Then the action I was trying to do (fetching for example) completes successfully.

Other details:

• Terminal still works without asking to use my credentials
• My repos from bitbucket.com are still working
• Github.com is not having problems as far as I can tell
• I already tried restarting my computer
• This popup comes up even when I don't perform an action (probably from the automatic background repo check?)

Update: I fixed this myself by deleting the keys for "github.com" from the keychain.