Recently, I started seeing over half of the questions on the site highlighted in blue. Later, I noticed that code-golf appeared under my "Frequented Tags". Frequented Tags is a feature of the site where it decides what questions are interesting to you based on your viewing habits. Apparently, I'm interested in code golf!
As a workaround, I added dummy to my favorite tags.
My feature request is for an exception to be made for code-golf and maybe code-challenge. In general, tags that apply to over (perhaps) 1/3 of all questions on the site should be excluded from "Frequented Tags". Otherwise, the highlighting becomes nothing but noise.