Can't transfer files through TOR Proxy

I set up Keybase to work with my TOR proxy, and all seems well, except I can't transfer files. I checked my firewall logs, and when I try to transfer files, kbfsdokan.exe is being blocked from connecting directly to the Internet. Ignoring the privacy implications for the moment, how can I get file transfers to use the proxy?

The issue identifies kbfsdokan.exe as the component attempting a direct Internet connection during file transfers. Start by tracing how Keybase's TOR proxy configuration reaches file-transfer connections, then determine whether proxy use is supported for this path. Done means file transfers no longer require a direct connection when the proxy is configured.

Written by the indexing model from the issue text.