Each panel body is a real <ul> with one <li> per row, so a screen reader announces a list and counts it. The rest has no role, and the only ARIA attribute is the oneWay remove button's label.
- The two lists are not named. A panel's title is plain text in the header, not a heading, and nothing ties the list to it. The English locale leaves both titles empty, so an unconfigured Transfer reads as two anonymous lists.
- Pass titles for sighted readers. An aria-label on Transfer names the whole control, not either list. To name each list, draw it yourself in a children body.
- The counts in each header (“3/12 items”) are plain text. They are correct, and nothing announces them. See below.
- The two search inputs have no label. Their name is the placeholder, which is the same on both sides, so a reader hears “Search here” twice. Pass showSearch a different placeholder per use.