Until a few months ago, it was working perfectly. However, recently it has been spamming unrelated questions into Slack.
Questions like Xcode: How to create alias for already added image are being added to the channel. That very obviously doesn't have one of the requested tags.
I get spurts of 30 of these each time this happens. This has been happening for at least a couple months (I can't see past 3 Jan this year in my Slack). Fortunately, posts aren't very common: maybe once per week.
But if you look at the feed content, you see that the only questions it contains are ones with one of the tags. For example, the first one is Get Line/Col info from System.Text.Json.JsonElement titled "Get Line/Col info from System.Text.Json.JsonElement" and published on 2022-01-03 (a year ago).
I raised this with Slack support, and they suggest that the feed momentarily contains these questions, which the bot picks up and posts. Is it possible for the feed to just change content like that? Might that be what's happening?