Showing results before i finished typing/pressing run-tests

Hey everyone,
I just started out and noticed, that the results are always showing, before I even finished typing or pressed the run-tests button in html tutorials.
For example i would type margin-top: 20 and it would already change the top margin, before I even type px.
How can i fix this? I tried clearing the cache and reloading the site, but still the same bug =/