Hi There @logoglo
Thanks for writing in! Upon testing, I can confirm the issue on my end as well. Could you please try following the below points and see if you can isolate the issue.
1.If you’re using a caching plugin, you need to purge your server cache and disable any CSS/Javascript minification options and test your issue.
2.Try switching to your parent X theme to see if you’re experiencing a conflict with your child theme customizations.
3.Remove your custom CSS/Javascript temporarily and re-test this issue again.
4.Disable your 3rd party plugins to see if you’re experiencing any conflict with one of your plugins.
Make sure to clear your browser cache as well before testing.
Let us know how it goes.
Thanks!