I'm not sure how it's meant to work, but muting doesn't seem to work properly for me at all, which is really annoying because the huge amount of stuff I've mute

I'm not sure how it's meant to work, but muting doesn't seem to work properly for me at all, which is really annoying because the huge amount of stuff I've muted in the past is the only reason my timeline is ever remotely usable. But recently, crap app of the day pops up, a few people share it, I ask them to hide all from that app, and I see it again the next day or so. The cynic in me thinks they might be doing some kind of test to see how long they actually need to hide something before it can be dropped back into the timeline, instead of just hiding it like I asked.