I was sent a link to a build log in Blue Ocean and opened that.
The build was spewing lots of data to the console (several thousand lines and almost a new line a second - which should be fine.
When the page loaded it scrolled to the bottom of the console output in the last step (again not an issue)
However I wanted to go to the Job not the Build page so I needed to go to the header.
However everytime I scrolled up the page jumped back down because of the new console output in the sh step and Blue Ocean decided that I wanted to view that and not something else.
This is clearly wrong and makes navigating back out of a page tedious.
Video (only available to cloudbees employees (sorry it contians some sensitive data)) is at https://youtu.be/3S0CLgBc8qw