Layers randomly disappear from the Timeline window, but the video is still viewable and playable in the Composition window. I need to shut down the Timeline, then reopen it, and the layer reappears. This happens almost daily. I'm on a Mac Mini M4 running Sequoia 15.2 and AE version 25.1.0
ChatGPT responded: You're not alone—this issue has been reported by other After Effects users, though it's not extremely common. The problem seems to be a UI glitch where layers remain in the composition but disappear from the timeline panel.