Bug 137076

Summary:	YouTube iFrame is missing (sometimes duplicated?) upon cached reload of a webpage
Product:	WebKit	Reporter:	Kyle Gray <kylesethgray>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ap, cdumez, darin, koivisto
Priority:	P2
Version:	525.x (Safari 3.2)
Hardware:	All
OS:	All
URL:	http://uvu.edu/woodbury

Description Kyle Gray 2014-09-24 14:09:11 PDT

If you embed an iFrame on a webpage, and you click forward to some other page; once you hit the back button and reload the first page, the iframe is duplicated among all iframes. 

e.g. on example URL, scroll down, note the two youtube videos, click a link, and then go back. The video is now duplicated, or the first video is missing.

Comment 1 Alexey Proskuryakov 2014-09-26 21:50:49 PDT

I could only reproduce missing first video in Safari 7.1, never a duplicated one. The missing video issue occurs most of the time, but not 100%.

It seems like a real bug - there is an honest <iframe src="http://www.youtube.com/embed/W7tj1vRDtUw">, which remains blank. Instead of a plug-in document, we have an empty document here.