Generating a new keypair and exporting only the subkey and then importing it into 18.04 seems to work. There must be something particular about my existing keychain. I guess I'll have to start git bisecting.
Generating a new keypair and exporting only the subkey and then importing it into 18.04 seems to work. There must be something particular about my existing keychain. I guess I'll have to start git bisecting.