zen-browser/desktop

Custom icons for tabs without favicons not saving

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#13020 opened on Mar 31, 2026

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 (3 comments) (1 reaction) (0 assignees)JavaScript (42,031 stars) (1,498 forks)batch import
Bugcomponent: workspacesgood first issueplatform: linuxplatform: macOSplatform: windows

Description

Preliminary Checks

  • I have read and understood the important section above.
  • I have searched existing issues and avoided creating duplicates.
  • I am not filing an enhancement request.
  • I have checked that this issue cannot be reproduced on Mozilla Firefox.
  • I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

After closing the browser, custom icons for tabs without favicons will occasionally be discarded.

Expected behavior

Preserved icons

Actual behavior

Discarded icons

Steps to reproduce

Add custom icon to a tab without a favicon and close browser a few times.

Screenshots and videos

https://github.com/user-attachments/assets/bb388908-92aa-4c79-bfcb-cdc4864d5e46

Version

1.19.5

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Workspaces

Relevant log output if applicable

Contributor guide

Tech stack
javascriptelectron
Domain
desktopfrontend
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.
half day
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.
clear
Prerequisites
Electron basicsJavaScript debuggingTab state persistence understanding
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate how custom icons are stored and retrieved in the Workspaces module. Examine the storage mechanism (likely file system or local storage) in the relevant source files for tab management. Check the three comments on the issue for additional clues. Test by adding a custom icon to a tab without favicon, closing and reopening the browser multiple times, and look for race conditions or missing save operations.