If closing a background tab while a new URL is being loaded from a bookmark, the new URL stops loading · mozilla-mobile/firefox-ios#32334

(2 评论) (1 反应) (0 负责人)Swift (12,950 star) (3,203 fork)batch import

Bug 🐞Contributor OKGood first issue

描述

Steps to reproduce

Open a tab and load any website
Open a new blank tab
From the blank tab, load any URL from a bookmark
While the new URL is waiting on a response to the initial HTTP request, close the first tab

Expected behavior

The first tab is closed while the second tab continues loading.

Actual behavior

The first tab is closed and the second tab stops loading and returns to the homepage.

Note that this only happens if I close the first tab while the initial HTTP request is pending in the second tab. If the initial request succeeds and it’s just waiting on other assets like images and fonts, the issue won’t occur. You have to get it at a very specific time.

Device & build information

Device: iPad Air 2019 A2163 / iOS 26.3
Build version: 68216
First seen version: Not sure

Notes

Attachments:

Screen recording
Log file - screen recording was taken at 14:36 which is around where the log ends

:information_source: Reference Person

@Foxbolts

┆Issue is synchronized with this Jira Task

贡献者指南

技术栈: swiftios
领域: mobile
议题类型: bug
难度: 4
预计时间: 1-2 days
活动状态: fresh
清晰度: mostly clear
前置要求: SwiftiOS developmentHTTP request lifecycleTab management
新手友好度: 25
研究方向: Investigate the tab lifecycle and network request cancellation logic in Firefox iOS. Look at how the browser handles tab closure and cancels pending requests. Focus on the code that manages tab switching and request delegation. The issue suggests that closing one tab interrupts an in flight HTTP request in another tab. Examine the `TabManager` and `WebView` classes, particularly how they handle `WKNavigationDelegate` callbacks and request cancellation when tabs are removed. The provided log file and screen recording should help identify the exact timing and sequence of events.