without installing this component and testing, i’m going to just guess that it is the _ underscore in the tag names. looks like all the tags that have underscores are not showing their icons.
i’m thinking this commit reconfigured your tag slugs that have underscores _ to dashes -
https://github.com/discourse/discourse-tag-icons/commit/46ee338ae4fb7b316e25501744e779f5f96c48e9
edit: testing now and indeed this is the case - if you change the tag slugs in this component from underscore to dash (don’t change the tag names themselves), it should work again.
