He answered me now, but it was second time posting the question. He said it was working fine for him, so he doesn't know what to do.
But I just realized, it's not just quotes. It's my bbcode in general! Even if I use other tags, it automatically puts it on one line. For example:
Quote:
[.code.]Testing[/code.]
Testing
|
automatically changes to this after I press "preview":
Quote:
[.code.]Testing[/code.]Testing
|
So it must have something to do with editing interface in general. Any ideas?