mozilla-mobile/firefox-ios

[iPad] The homepage thumbnail shows the thumbnail of the last visited page

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#29,677 opened on Sep 29, 2025

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Contributor OKGood first issue

Description

Steps to Reproduce:

  1. Install FF on iPad.
  2. Open a few different tabs.
  3. Open tab tray view. Open homepage.
  4. Return to tab tray and visit another tab (like wikipedia). Return to tab tray.

Expected Result: The thumbnail is correctly displayed.

Actual Result: The homepage thumbnail shows the thumbnail of the last visited page. (wikipedia)

Note: The homepage thumbnail turns blank when another tab is opened from tab tray and visited before returning to tab tray view.

Device & Build Information:

  • Devices: iPad Mini A17 Pro (26)
  • Build version: v143.2 (62039)

:information_source: Reference Person

+@Foxbolts+

┆Issue is synchronized with this Jira Bug

Contributor guide

Tech stack
swift
Domain
mobile
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
Basic Swift knowledgeUnderstanding of iOS view controllers
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Look into the tab thumbnail management logic, likely in the TabTray view controller or the Homepage view. Check how thumbnails are captured and displayed when switching between tabs. The bug suggests a cache inconsistency where the last visited tab's thumbnail overrides the homepage thumbnail. Focus on the thumbnail caching mechanism and the transition between tab tray and homepage.