Serious mistake in Settings - Outbound Network Proxy Type

Proxy Type; If I input "HTTP" (no ") for HTTP Proxy, Orbot fails to connect it. If I input "HTTPS", Orbot connect to (tor node IP):443 via proxy, as expected.

Conclusion: Just remove "HTTP". Or, make a radio selection menu, like

() None (O) HTTPS () SOCKS4 (_) SOCKS5

Trac:
Username: ikurua22