The handle was a child of the rounded sidebar panel, which set
overflow_hidden — so the 6 px strip pinned at right(-2) was clipped to
the rounded edge and never reached the cursor. Split the panel into an
outer positioning wrapper plus an inner rounded panel, and place the
handle on the wrapper. Widen the strip to 8 px straddling the edge and
warm the hover tint so the affordance is visible during drag.
ZacharyZhang-NY
7c33381063