This question has a picture right at the start of it. This results in the raw Markdown being shown in the question summary (as illustrated). This Markdown needs to be filtered out.
Thinking that I would be clever, I tried to reproduce the 'problem' with this Meta post, but I see that the markdown is not included in the Meta summary. Is it intentional that Meta and SO have different behaviour in that respect?
Edit: clearly I wasn't clever enough and my Meta post was correctly Markdown'd.