1931670 - "Firefox crashes when opening multiple tabs with heavy JavaScript content"

Status: RESOLVED DUPLICATE of bug 1931663

(Firefox :: New Tab Page, enhancement)

Description

[Sohag Khan]

Steps to Reproduce:

Open Firefox 115.0 on a Windows 11 machine.
Open 10 or more tabs with websites that have heavy JavaScript content (e.g., interactive web applications or sites with large dynamic scripts).
Wait for a few seconds after the tabs have loaded.
Try interacting with any of the opened tabs (clicking, scrolling, etc.).
Expected Behavior:

Firefox should handle multiple tabs with heavy JavaScript content smoothly without crashing or freezing.
The browser should be responsive and not experience any major slowdown.
Actual Behavior:

After opening several tabs with heavy JavaScript, Firefox becomes unresponsive and crashes when interacting with the tabs.
The crash occurs intermittently, but it is frequent when more than 5 tabs are open with heavy scripts.
A crash report dialog appears asking if you'd like to send the crash report to Mozilla.
Severity:
Critical: This bug causes Firefox to crash, making it unusable for users who need to run multiple tabs with JavaScript-heavy content. This has a significant impact on user experience, though it doesn't render the browser entirely unusable in all cases.
Priority:
P1: This issue should be treated as a top priority since it frequently causes crashes, which are detrimental to the user experience on Windows 11. It should be fixed as soon as possible to ensure Firefox remains stable and reliable.