Usually, the 'active' list is used to mean https://electronics.stackexchange.com/questions?sort=active, the list found by clicking the Questions button/IC and the "active" tab. I believe you're referring to the front page 'active' tab, located at https://electronics.stackexchange.com/?tab=active. They are completely different lists.
The question appears on the "active" list, but not the front page. This is consistent with the behavior described here:
Also, the front page does not display negatively voted questions, provided that it has refreshed by the time that the question is negative. See voyager's comment on this post. A question that was just recently downvoted might still be on the front page, but by the next time the front page refreshes it should be gone.
This post received quite a few downvotes, so it should have disappeared from the front page.