Discussion lens: what gives way as the window narrows. The lens is a pair, guide on the left and the conversation on the right, so the order is: 1 the projects column folds, 2 the navigator narrows to 200 px, 3 the conversation narrows to its 368 px floor, 4 only then does the navigator fold, and the toolbar's list button (new for this lens, labelled Discussion guide) brings it back. The As planned / As asked tabs sit on top of the navigator, so they come and go with what they reorder, and the navigator's grey and keyline run to the top of the page: the bar over the conversation no longer spans it. Drag the slider or pick a width. Click the list button, or press ⌥⌘L, to toggle. Synthetic study.
Projects column 214Navigator 280 default, 200 minimum, 60% ceiling (unchanged)Wires 40Conversation floor 368 (the shared CONTENT_FLOOR_PX)Dashed outline: the conversation is under its floor because you opened the navigator yourself. A panel you just opened is never closed for you, as on the other lenses.