Jellyfin-web: Web pages lose their format when opened in a new tab in Dashboard in 10.3.0

[97carmine]

Describe the bug
The pages lose the format at the time of opening any option of the left menu of Dashboard in a new tab

To Reproduce

1. Go to 'Dashboard'
2. Right click on any option in the left menu, for example, _Users_ and select _Open link in a new tab_
3. See error

Expected behavior
Web pages should be displayed the same as clicking on the menu option in the same tab

Screenshots

System (please complete the following information):

• OS: Debian 9
• Browser: Firefox
• Jellyfin Version: 10.3.0
• Reverse proxy: no

[thornbill]

It looks like these links are missing the leading #. Adding that should correct this behavior.

[trueChazza]

I have looked into this, and it's not as simple as it first seems.
Here's a record of things I came across to help others starting on this:

• Opening links in new tabs points directly to HTML templates.
• App router does not pickup hard coded leading #.
• Including main bundle in HTML templates not possible without major refactor.

[stale[bot]]

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[MrTimscampi]

I am removing the "Good first issue" label because, in my opinion, this would need a sizeable rewrite of the router.

This will likely be fixed as part of #889

[thornbill]

Should be fixed by https://github.com/jellyfin/jellyfin-web/pull/2158