The tags that get lost on the left are the secondary ones. They are just some optional tags that you can apply to every category, and you can apply multiple of them. And there are three primary tags, it's mandatory that you choose one of them when posting. I can create a fourth primary tag about technicians if there are enough of them who would like to join.
And I guess I will have to pin a Welcome thread at the top with some links or explanations about how to post pictures, what are tags, etc. We've already discussed some of those in various posts and it might be worth it to merge all that in a single page.