As I was typing an answer I realized that I cannot type , in main answer window. I was watching the preview window while typing **, and I could see only one asterisk and a comma. That is, in the preview window I see , instead of *,. I tried "", then in the preview window I see "",. The only way out was to include a space between * and the comma. That is, if I type ** , then I can see ** , in the preview window.
Even here, the preview window acts strangely. The above paragraph is unreadable in the preview window. If I retype only the first sentence (of the above paragraph) then the two asterisks and the comma shows up fine. See below.
As I was typing an answer I realized that I cannot type **, in main answer window.
Does ** has a special assignment in an answer window?