LinkedIn changed its composer overnight
Going to post a launch video to LinkedIn, the automation that had been reliable for weeks fell over on the first step: the selectors it hangs on were all dead. LinkedIn had swapped its post composer to a TipTap and ProseMirror editor sometime overnight — the media button was relabeled to Media, the dialog wrapper the flow keyed off had vanished, and the whole DOM had shifted underneath it. We rebuilt the video-post flow against the new structure and got the post out. Nothing about the task changed; the page it runs against did, without warning, which is the standing cost of automating somebody else's UI.