Item Sets?

Had a similar thread but no response, so I'm making it again. What's going on with Item Sets? I've made a couple and they don't seem to work... Riot pls respond
Best New

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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