Quite often there are posts that have some sort of HTML / XML-like markup that is relevant code to the question:
<asp:Label runat="server" id="WebFormsAreSo2005" />
New users will often post it like this:
Don't see the code example? That's because I didn't indent it by 4 spaces so it's hidden. This is a quite frequent problem for new people. Hopefully, someone will recognize the problem and fix it with an edit - but that's hard sometimes. Since in some cases it is completely hidden, it just looks like a question with no code sample. I've gotten in the habit of just click "Edit" on questions that deal with XML / HTML anyway to see if there is any hidden code because of this.
This often leads to "Show us your code", "What have you tried?" etc. comments. With other languages it's fairly easy to notice there is a formatting problem, but with this particular case it just disappears.
Someone might be precognitive and will make the correct edit, and point the OP to the markdown editing help, but that isn't always the case. Yes, we all know you are suppose to select your code and click the Code Sample format button. You can even click the question mark for some great help that illustrates exactly how to fix it, but that just isn't happening for new people. Right out of the gate these new users are probably starting off with a question that has several down votes and a barrage of comments.
Can we improve the code formatting experience for new users somehow?
Alternatively, can we change the way HTML/XML is interpreted such that it is at least visible so it is clear that something needs to be fixed?