Page jitters after update when logged in

Hi @greybird

What’s the version number of your Firefox browser? Are you using Windows or Mac? Does it still happen in a private session?

Can you try running a plugin and theme conflict test:
https://smartslider.helpscoutdocs.com/article/1735-how-to-do-a-plugin-theme-conflict-test
to see if the problem happens when no other plugins are enabled using a default WordPress theme.

If you still see the problem like that, please export your slider:
https://smartslider.helpscoutdocs.com/article/1728-export-import-slider#export
and send it to us via:
https://smartslider3.com/contact-us/support/?ref=https://wordpress.org/support/topic/page-jitters-after-update-when-logged-in/
Also, please include a link to your site.

If everything looks good using Twenty* theme and Smart Slider only, start switching back your theme and plugins one by one to figure out what causes the problem, and tell me the name of the plugin/theme to check out what’s going on!