In Bitbucket Server, I am able to quickly navigate the file structure, expanding directories and clicking files to view changes on the left (stable interface) and the diffs are shown on the right.

On Bitbucket Cloud, if I click on any of the files changed, it autoscrolls me down to the file, and I have to scroll all the way back up to see the file view again.

Please consider bringing the file control on Bitbucket Server, into Bitbucket Cloud.