Currently, the tags selector looks like this:
The “search” field here is insufficient affordance to show that more than those 5 tags are available. When taken at face value, it appears that the search function lets you search within those 5 tags, which of course is completely unnecessary because I can see the 5 tags right in front of me.
As a result, the 5 tags shown in this list have very high usage, while usage of tags not within the list falls off hard. The next highest user-settable tags in this forum are “ai” at 203 uses, “solved” at 176 uses and “server-resources” at 138 uses. In the case of my forum, the top 3 are “plugins, recording, accessibility” - with tags like “bug, ui, playback” being effectively unused.
Potential solutions
A quick and easy way to add affordance here would be to have a “search 123 tags…” as the search placeholder.
Alternatively, showing more tags would also work. After all, right nextdoor to the tag selector is a component which solves the affordance issue by just showing one big, long, scrollable list instead: