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Opened 8 years ago

Closed 2 years ago

#39191 closed defect (bug) (worksforme)

Twenty Seventeen: Warning in Firefox console for scroll-linked positioning effect.

Reported by: shelob9's profile Shelob9 Owned by:
Milestone: Priority: normal
Severity: normal Version: 4.7
Component: Bundled Theme Keywords:
Focuses: Cc:


When I use TwentySeventeen with Firefox (50.0.2 for Ubuntu) I get this warning on the front page in my console:

This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see for further details and to join the discussion on related tools and features!

Does not happen with TwentySixteen or in Chromium.

#38850 is related as it is about same warning, but is happening in the editor.

Change History (5)

#1 @davidakennedy
8 years ago

  • Keywords needs-patch added
  • Milestone changed from Awaiting Review to Future Release
  • Summary changed from TwentySeventeen Warning in Firefox console. to Twenty Seventeen: Warning in Firefox console for scroll-linked positioning effect.

Thanks for the report @Shelob9! This is only a warning, so I'm not too worried about it. But we might be able to adjust the JavaScript to avoid the warning and be more performant. It's worth further investigation. Any patch will need to be mindful of the theme's current browser support and not breaking any existing sites.

This ticket was mentioned in Slack in #core-customize by sirbrillig. View the logs.

8 years ago

#3 @ianbelanger
4 years ago

  • Keywords needs-patch removed
  • Milestone Future Release deleted
  • Resolution set to worksforme
  • Status changed from new to closed

I just tested this issue in FireFox 73.0.1 and no longer see the error. I am going to close this for now, but it can be reopened if needed.

#4 @ckranebitter
4 years ago

  • Resolution worksforme deleted
  • Status changed from closed to reopened


this is still an issue.
If you visit in Firefox and start to scroll you still get the warning in the console.
The warning is a result because of how the sticky-menu is implemented in Twentyseventeen.
Firefox suggests the »sticky«-css should be used.
So please change the implementation of the menu in upcoming theme-updates to meet Firefox’s best practice suggestion.


#5 @desrosj
2 years ago

  • Resolution set to worksforme
  • Status changed from reopened to closed

I just tested this again, and I'm unable to reproduce using Firefox 102.0.1 on MacOS. Additionally, the link included in the ticket description from the original console warning is now a 404, so it seems this has fixed itself.

If this is not the case, please feel free to reopen and include updated information.

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