This is a rendering problem in email notifications received based on watched keywords. The text containing question details is rendered as HTML-escaped. The characters
< (less-than) and
> are shown as
< (ampersand-L-T-semicolon) and
While it's fine to see any pre-formatted text rendered as regular text in this context, it shouldn't be HTML-escaped more than needed.
Here's a screenshot of the email in Thunderbird (Gmail shows the same):
... while the question renders nicely on the website: