This extension solves the problem of adding a new list to your board. On all platforms. It hides the "Add a list" button, which is displayed by default in every web browser.

This Chrome extension solves the problem of the layout change, which is introduced to you on the right side of every board. If you get a new board on Trello.com, you need to refresh all the browser tabs to get your latest board layout. This causes unpleasant user experience.

When you install this Chrome extension, the "Add a list." button is hidden.

If you have this problem, just install the extension and refresh your browser tabs with Trello boards.