Display error - looks like html code /mobile view for milliseconds before pages are loaded

Dear community,

since we have been using litespeed cache, there is a "display error" when loading individual pages due to an unknown setting. It looks like the page will be displayed as html code /mobile view for a few milliseconds. Unfortunately this is visible when loading every page. What attitude could be causing this problem? We attached screenshots. Thank you very much for your help!


I'm not tech staff. I'm user like you.

if you want support then describe you configuration such fully as possible.

what CMS and version?
what theme and version?
LSCache plug-in - what version?
Okay, I understand. Sorry...
Wordpress 5.7.2
Theme: Osaka from flothemes - there is no version as it is a child theme
LSCache 3.6.4