Can only reply or forward e-mail with US-ASCII encoding with US-ASCII
When I reply to or forward an e-mail message which is sent to me with 7-bit US-ASCII encoding, the built-in editor in Sylpheed will not accept typing of any characters not in the US-ASCII character set. This is a major problem. My outgoing character encoding is set to UTF-8 in the preferences, so I expect to be able to use any characters in replies and forward messages.
Sylpheed version is 3.4.0beta7
OS is Linux (lubuntu 14.04)