Opened on 03/24/2015 at 03:59:20 PM

Closed on 03/28/2015 at 05:29:45 PM

#2209 closed defect (fixed)

Fixed positioned elements aren't highlighted correctly

Reported by: passbrains Assignee: sebastian
Priority: P3 Milestone: Adblock-Plus-1.9-for-Chrome-Opera-Safari
Module: Platform Keywords:
Cc: sebastian, mapx, Ross Blocked By:
Blocking: Platform: Chrome
Ready: yes Confidential: no
Tester: Verified working: no
Review URL(s):

Description (last modified by Ross)

Adapted from


Windows + Vista 64bit + Chrome + English
ABP version Chrome Browser

How to reproduce

  1. Install latest ABP extension on Chromw Browser
  2. Load web page
  3. Scroll down till u see sign in prompt.
  4. Click on ABP icon and select 'Block Element'
  5. Click on the prompt to select for blocking.
  6. Observe.

Observed behaviour

Highlight does not appear on selecting the prompt though add filter dialog appears after few seconds.

Expected behaviour

Selected element for blocking shall show highlighting on highlighting.

Attachments (1)

3668_1427049025_dark.jpg (162.4 KB) - added by passbrains on 03/24/2015 at 03:59:25 PM.

Download all attachments as: .zip

Change History (9)

Changed on 03/24/2015 at 03:59:25 PM by passbrains

comment:1 Changed on 03/24/2015 at 03:59:28 PM by passbrains

1 - 24 Mar 2015 15:54:41 posted by Ross Green
Reproduced as described.

Chrome 40.0.2214.93 / Windows Vista x64 / ABP Build:

comment:2 Changed on 03/24/2015 at 04:03:18 PM by Ross

  • Description modified (diff)

This appears to be caused because of the use of transform3d on the prompt elements. Removing the transform3d from the style causes the [Block element] highlight to appear/work as expected.

comment:3 Changed on 03/24/2015 at 07:18:02 PM by mapx

  • Component changed from Unknown to Platform

comment:4 Changed on 03/24/2015 at 07:18:36 PM by mapx

  • Cc sebastian mapx added

comment:5 Changed on 03/28/2015 at 04:41:20 PM by sebastian

  • Cc Ross added
  • Review URL(s) modified (diff)
  • Status changed from new to reviewing
  • Summary changed from Highlight for selection does not appear for blocking prompt to Fixed positioned elements aren't highlighted correctly

This seems to be unrelated of the transform CSS property. However, there is a bug effecting elements using postion: fixed. Since #1755 the overlay will be fixed positioned as well if the element it is highlighting is fixed positioned. But the scroll offset is still added. So the overlay isn't correctly positioned (in this case outside of the visible area) if you scrolled down.

comment:6 Changed on 03/28/2015 at 04:41:28 PM by sebastian

  • Owner set to sebastian

comment:7 Changed on 03/28/2015 at 04:41:39 PM by sebastian

  • Priority changed from Unknown to P3
  • Ready set

comment:8 Changed on 03/28/2015 at 05:29:45 PM by sebastian

  • Milestone set to Adblock-Plus-for-Chrome-Opera-Safari-next
  • Resolution set to fixed
  • Status changed from reviewing to closed

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