The warning, while helpful and an improvement over reloading the form, is unnecessarily distracting and alarming in many cases.
- A simple improvement might be to "fire" the warning only some (fraction of) seconds after the user has stopped typing.
- Alternatively, the level of alarm should be more carefully dosed. For instance it could start as a green informative box "you're doing well, but continue typing" for simple clashes and become a red warning e.g. when a titleblacklist rule was hit.
It would be interesting to know how many times we're showing the warning.