The new pull request experience moves a lot of useful information to the sidebar to the right. This information was previously found on the front and center of the old pull request view.

Information such as the listing of 'Files changed' which was previously on the middle of the page has now been moved to a new tab on the sidebar on the top right. Similarly, the activity section has also been moved.

Moving the 'Files changed' to the sidebar truncates files with long file names. Resizing the sidebar to reveal the full file name, in turn, will decrease the size of the diff view.

The sidebar contains a lot of information with lots of collapsable menus. The information contained was previously visible front and center on the old pull request view.

The condensing of information makes it difficult for visually impaired users to see and navigate.