I am on Android. I received a notification from Discord. I reached up to swipe it and dismiss it. Instead my finger brushed it wrong and I activated a button labeled "Mute th".

Then had to spend a few minutes figuring out what "th" was and how to undo what I'd done.

My extremely uncommon opinions are that the right-swipe-to-dismiss gesture has never been good; and that Android made a huge mistake making notifications interactive popovers instead of using the original ticker in the timebar.