One feed that I have noticed. It’s this one: https://newsblur.com/site/7500851/ars-technica. I type strings that I know have results, but nothing shows in the results. Thanks for looking into it!
Well, it’s working now. I did delete the feed and re-add it, but it didn’t work after that, but maybe it takes a while to index, because it works now.
Resubscribing to a feed does force it to recount its search subscribers, so that may have worked. Not sure why it turned off but glad that fixed it.