Option for message formatting (-- to ‏‎−, >> to », << to «)

Hi.
I want to report a bug in the telegram desktop version. (Linux)
The problem of the character: Dash. Or (-)
When two characters Dash, taken together, the result rather than the (--) becomes a long line. (‏‎−)
But when the two characters together Dash, the text first, this problem does not exist.
For example:
http://s4.picofile.com/file/8173777318/snapshot.png