Unable to select my GPG key

[bowlofeggs]

I have two GPG keys, but the configuration drop down for "My key" only has None and my other key as the two options. Meanwhile, I am capable of using gpg -s with the key I wish to use. I am unsure how to debug this to offer more information, but as far as I can tell the two keys are the same in ways that should matter (i.e., both are 4096 bit, both have a secret key, etc.)

If you have suggestions on how I can find more information, I'd be happy to try!