When accessing a job or branch that has '/' in the name, it needs to be escaped using %2F. However, in Safari, when the page refreshes, the escapes are removed, and the URL just has a / in it. And you then get a 404 page.

Similarly, when navigating from the regular Jenkins UI to the Blue Ocean UI in Safari, you get a 404 page and the job & branch names aren't escaped.

Steps to reproduce:

• create a job with / in the name
• open the page in the Blue Ocean UI, using Safari, with the escaped URL.
• refresh the page
• see a 404 page.

We get / in the job name because we use the BitBucket Branch Source Plugin (v1.9), so our jobs are in folders, and the job name ends up being <team name>/<repository name>. On top of that, we use a pattern of story/<issue-number>_<summary> for our branches, so there's another /