Closed Bug 1519821 Opened 5 years ago Closed 5 years ago

Debugger fails to scroll properly - slow script warning, then "blank" scrolling and only shows on click

Categories

(DevTools :: Debugger, defect)

Product:
DevTools
Component:
Debugger
Type:
defect
Priority:
Not set
Severity:
blocker

Tracking

(Not tracked)

Status:
RESOLVED DUPLICATE of bug 1519462

People

(Reporter: standard8, Unassigned)

Details

(Keywords: regression)

Reproduced on latest mozilla-central (https://hg.mozilla.org/mozilla-central/rev/3dc7d345da52), latest nightly (66.0a1 (2019-01-14)).

STR:

  1. Open the debugger (either the content debugger or the browser toolbox debugger).
  2. Open any javascript file.
  3. Attempt to scroll the javascript file (I used the mousewheel)

=> The browser/toolbox hangs, and after a while there is a slow script warning presented for "chrome://devtools/content/sour…odemirror/codemirror.bundle.js:1"

  1. Select "Continue" on the warning dialog. You might have to select continue several times.
  2. Attempt to scroll again with the mousewheel

=> As it scrolls, you get a blank area. If you click in the blank area, then you can see the text.

=> Attempting to scroll by clicking and dragging the scrollbar failed completely.

Status: NEW → RESOLVED
Closed: 5 years ago
Resolution: --- → DUPLICATE
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