That's odd. Once you have posted something and haven't edited it yourself, it shouldn't change by itself. I haven't seen this issue come up before so I'm at a loss to tell you the truth.
I could see this happening if you went back and made some edits to it and while doing so accidently deleted the / in the quote gizmo thingy. But it doesn't sound like that since it seems you are saying that you did not make any edits to it, and that it just happened on its own. If this continues to happen you might want to send a message to Xear, since he knows more about the gears and levers that operate this system.
"The first order of government is the protection of its citizens right to be left alone."