Developer Tools Hang on Breakpoint during onblur

UNCONFIRMED
Unassigned

Status

P2
normal
UNCONFIRMED
3 years ago
17 days ago

People

(Reporter: eric.brandel, Unassigned)

Tracking

(Blocks: 1 bug)

47 Branch

Firefox Tracking Flags

(Not tracked)

Details

Attachments

(1 attachment)

(Reporter)

Description

3 years ago
Created attachment 8762087 [details]
proof of concept

User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36

Steps to reproduce:

Adding a breakpoint in an onblur event causes the current tab to become unresponsive (unable to click anything in the tab, including the Click To Resume (play) button). When the tab and/or browser loses focus, the tab will then become responsive again.

In the attached example, adding a breakpoint at line 10 exhibits the behavior.


Actual results:

The browser tab hangs.


Expected results:

The browser tab should not hang.
(Reporter)

Updated

3 years ago
Component: Untriaged → Developer Tools: Debugger
At first glance, this sounds like a nested event loop problem.
Priority: -- → P2

Updated

8 months ago
Product: Firefox → DevTools
Blocks: 1074448
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