Same bug, 12.04 . FYI, same problem existed with jEdit, but only when its "Save-twice" option was set. It would upload file to a temporary name, and once complete, then replace remote server's file with temporary upload. Perhaps the temp file had both owner and group set to ssh login. When instead save-twice feature disabled, original file's owner and group are preserved.
Same bug, 12.04 . FYI, same problem existed with jEdit, but only when its "Save-twice" option was set. It would upload file to a temporary name, and once complete, then replace remote server's file with temporary upload. Perhaps the temp file had both owner and group set to ssh login. When instead save-twice feature disabled, original file's owner and group are preserved.