FOUC in Firefox




Wordpress LScache Plugin: FOUC in Firefox

Last Updated on: Wed, 15 Apr 2026 00:00:02
Hi there, When I enable JS Combine a FOUC effect is shown for a few seconds on Firefox only. By the way, the same settings and same UI on a different domain are not showing any FOUC on the same browser. I purged all caches and cleared all browser caches. No result. How to fix the issue? if it happens after JS combine enabled, then please check this page Hi there, thanks for such a quick reply. I tried according to the tutorial. But maybe, I missed something. So, the problem persists. One more thing, FOUC happens where Gravity Form is present and when the user is not logged in. Thank you! did you also enable JS combine external and inline ? Yes, I did. Do you see any FOUC effect here? Link: https:// wizard[dot]startupore[dot]com/company/parent/corporate/general/public/wizard/wand/career-wizard/job-application no, it loads fine on me



LiteCache Rush: Speed comes from using less, not from doing it faster



Reference