Relative Url feature is not compatible with localStorage
### Summary
It's possible to install Gitlab with relative url : https://docs.gitlab.com/ee/install/relative_url.html#install-gitlab-under-a-relative-url
But if you install two instances on same domain, there are some conflicts with datas in localStorage : user/frequent-groups and user/frequent-projects (and maybe MergeRequests cache ?). So Frequent Groups/projects menus are the same for the two instances.
### Steps to reproduce
Install two instances with relative url :
http://localhost/gitlab1
http://localhost/gitlab2
Create projects and Groups
Browse pages across
### Example Project
N/A
### What is the current *bug* behavior?
Frequent Groups/projects menus are the same for the two instances.
### What is the expected *correct* behavior?
Frequent Groups/projects menus should be relative to their own instance.
### Possible fixes
You could use a prefix containing relative_url for each key like that :
relative_url/user/frequent-projects
issue