I added revolution slider on home page and its visible until i open page in incognito mode. Its just dissapear. Code of this slider stil exist on page, but its invisible and styles for some block are different. Its happens with every revoslider on every page, include demo pages.
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Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, If the problem has gone, activate the plugins one by one, checking the issue to detect which one causes the problem.