I checked in a screen reader. Nothing is announced when pressing the buttons. This is a problem. It should say something like “Checkbox B moved to the left”. Without any sort of announcement, the user has no idea if pressing the button did anything.
Thank you very much for your insightful review and valuable feedback regarding the accessibility of our recent list transfer feature. Your suggestions were instrumental in enhancing the user experience, especially for those relying on screen readers. I have incorporated your recommendations into the updated code [0], ensuring better accessibility and usability. I'm also including a link to our conversation [1] for further context and transparency. Your thoroughness and attention to detail are greatly appreciated, and I look forward to your continued guidance and expertise in future projects.
Test page: https://output.jsbin.com/jixoqur/quiet