Bug Report: Search Issue with Channel Selection in New User Mention Trigger

Good afternoon - small bug (I think). I am trying to add a new trigger (New User Mention), when trying to choose a channel, the search behavior is not behaving like normal search at all. For example, in the screenshot, I'm trying to look up a public channel named "mirror-mirror-on-the-wall", it's not showing up. Even when I try to search for a channel that is there, for example "props" or "random", it's not filtering. Even if I try full string matching (ie. "Public channel: random"), it still doesn't work. This makes selecting channels quite tedious.