My favourite example is something that happens quite often even with Opus, where I ask it to change a piece of code, and it does. Then I ask it to write a test for that code, it dutifully writes one. Next, I tell it to run the test, and of course, the test fails. I ask it to fix the test, it tries, but the test fails again. We repeat this dance a couple of times, and then it seemingly forgets the original request entirely. It decides, "Oh, this test is failing because of that new code you added earlier. Let me fix that by removing the new code." Naturally, now the functionality is gone, so it confidently concludes, "Hey, since that feature isn't there anymore, let me remove the test too!"