(Using BB Server 4.13)

On Pull Request "Diff" tab, you can fold/expand the folders. This is very helpful when reviewing monster PRs that touch dozens of files.

But when you refresh the page, all this state is lost, and again you see all the files and folders unfolded, so when you restart the review, you first need to fold all those things again.

When I finish reviewing a huge subfolder in a diff, I don't want to ever see it expanded anymore until I explicitly do it myself.

For example, sometimes you have some interesting part of PR in the "top" of the tree, and another half in the "bottom" of the tree, and you have a lot of boring stuff in the middle of the tree, which you prefer to hide (fold), otherwise everytime one wants to switch between the two interesting files, one needs to scroll a lot in the tree, which is suboptimal.

The problem is even worse because sometimes BB UI self-refreshes the whole page when you switch the file (probably when the PR was not touched for N minutes, I'm not sure what triggers that exactly). So for really big PRs that take time to review, the code review experience is not great.