Page loads html format before loading the content and UI

Topic summary

A page loading issue is occurring where HTML content briefly displays in an unstyled format before the CSS and UI elements fully render, creating a visual glitch.

Problem Details:

  • The user has documented the issue via a Loom video recording
  • This appears to be a Flash of Unstyled Content (FOUC) problem
  • The raw HTML structure is visible momentarily during page load

Seeking Help:

  • The user is asking what could be causing this rendering delay
  • No solutions or responses have been provided yet
  • The issue remains unresolved and open for troubleshooting
Summarized with AI on November 22. AI used: claude-sonnet-4-5-20250929.

When loading the a page, there is a glitch of the html format. Please see the loom link.

https://loom.com/share/c987e349477f442aa133043e00dfbb93

What could be the cause of this and fix?