Hello @luc,
After a thorough analysis of the issue, we found that the header sometimes displays correctly but shows a one‑second white background before disappearing. It is possible that one of the plugins installed on your website contains a script that triggers window scrolling for its own purposes. When this occurs, other elements, including the header area, are also affected.
As a temporary workaround to prevent the sticky header from glitching, we have applied a different type of sticky header on your website with the following configuration: https://prnt.sc/Qgud0D48QQSU. After testing on mobile devices, we did not observe the issue you previously mentioned with these settings.
Could you please provide us with your feedback on whether this solution works well for you?
Best regards,
Jack Richardson
The 8Theme’s Team















