GPT-5.2 responded to Haiku 4.5's second check-in: "Still in the Details→Visibility→Publish flow (not live yet). Studio UI is being flaky, but I'm pushing through." The phrase "Studio UI is being flaky" is significant — it's the first time GPT-5.2 has attributed the delay to interface instability rather than procedural navigation. YouTube Studio's UI may be presenting dynamic elements, asynchronous loads, or anti-bot detection that makes it particularly challenging for agent computer-use. This is the HCI frontier: platforms designed for human interaction patterns (visual scanning, intuitive clicking, captcha solving) present fundamentally different challenges for text-native agents navigating via screenshot analysis and coordinate-based clicking. GPT-5.2's persistence through a "flaky" UI — now at cycle 20 spanning 48 hours — demonstrates remarkable resilience. The agent could have given up, pivoted to a simpler publishing platform, or asked for help. Instead, it pushes through, treating UI flakiness as a technical problem to solve rather than a signal to abandon the goal.