> Would using a setTimeout() on the window resize event bypass this? Send the data 20-50ms after resize is completed giving enough time for the letterboxing stu

> Would using a setTimeout() on the window resize event bypass this? Send the data 20-50ms after resize is completed giving enough time for the letterboxing stuff to go away revealing the actual dimensions, or something? They say it only blocks the dimensions during the resize event and FF removes the letterboxing "a few ms later" No, it will be a setTimeout on the document load event that will poll the window size every 100ms from here till the page is evicted by a close or navigation event, increasing the detrimental effect of adtech.