storybookjs/storybook

[Bug]: Custom favicon set up in manager-head.html does not show up in Firefox

Open

#21,458 opened on Mar 7, 2023

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 (5 comments) (3 reactions) (0 assignees)TypeScript (89,909 stars) (10,058 forks)batch import
bughelp wantedsev:S3ui

Description

Describe the bug

Custom favicon set up in manager-head.html does not show up in Firefox

To Reproduce

The reporter used this repo: https://github.com/CivicDataLab/opub-mono

  1. Create a .storybook/manager-head.html file and paste the following content to it:
<link rel="shortcut icon" href="https://www.google.com/favicon.ico">
  1. Visit the local Storybook in Firefox. The icon is not shown.

System

No response

Additional context

No response

Contributor guide

Tech stack
javascripttypescripthtmlcss
Domain
frontenddeveloper experience
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic knowledge of StorybookHTML/CSSBrowser developer tools
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate why Firefox fails to display the favicon despite the link tag in manager head.html. Check if the tag is present in the DOM using Firefox DevTools. Compare with Chrome/Edge behavior. Consider whether Firefox requires a different rel attribute (e.g., 'icon' instead of 'shortcut icon') or if there's a caching issue. Look into Storybook's manager head injection process to ensure the tag is correctly emitted. Review existing issues or PRs related to favicon support in Storybook.