Closed Bug 1479710 Opened 7 years ago Closed 7 years ago

Browser tab, dev tools, browser keyboard shortcuts become unresponsive by JavaScript

Categories

(Firefox :: Untriaged, defect)

Product:
Firefox
Component:
Untriaged
Version:
63 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED INVALID

People

(Reporter: wirch.eduard, Unassigned)

Details

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0 Build ID: 20180730221422 Steps to reproduce: In nightly ASan build 63.0a1 (2018-07-30) (64-bit) (Linux), navigate to https://smarthost.typeform.com/to/diyRZd Click on the first image. Actual results: The tab and browser functions becomes unresponsive: - the mouse cursor does not change when hovering - clicking the UI has no effect - Dev tools do not open (using menu) - Browser keyboard shortcuts (CTRL-L, F5) do not work. The thread responsible for the tab peaks to 100% CPU usage. Closing the tab is not enough to resolve the problem. I have to kill (signal 15) the thread manually as well. Expected results: JavaScript should be processed normally (it works fine for Chrome). But even if JavaScript deadlocks, browser functions should remain responsive.
Nightly 63.0a1 (2018-07-31) (64-bit) doesn't show this behavior any more.
Status: UNCONFIRMED → RESOLVED
Closed: 7 years ago
Resolution: --- → INVALID
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