Hi - Website has a dark background and on pages with either an easy digital downloads purchase button shortcodes or a gravity forms form the page loads with a bright white flash. All other pages load just fine with no bright flash.
Determined it to be these two plugins as I’ve disabled all plugins and narrowed it down to those two. Also renamed the functions.php file to eliminate any custom functions, issue persisted.
With the developers and companies behind these two plugins I feel this may possibly not be a plugin issue but rather a theme issue in possibly the way js is being loaded on page load.
Seems to only occur in Chrome and MS Edge, FF does not produce the white flash.
Please let me know of any further information or details you may need. Included access in a secure note.