Created attachment 8798418 [details] 2016-10-06 14h13_35.mp4 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID:20161005030211 [Affected versions]: Nightly 52.0a1 [Affected platforms]: All platforms: Windows 10 x 64, Mac OS X 10.10 [Steps to reproduce]: 1.Launch Nightly 52.0a1 with a new profile 2.Open http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_iframe 3.Open Find Bar (Ctrl+F) 4.Search for "w3" 5.Scroll down [Expected result]: The highlight for matching terms should be visible only in the iframe area. [Actual result]: The highlight for matching terms is visible outside the iframe area and moves when you scroll.
The same problem exists with scrollable textarea tags.
Too late for firefox 52, mass-wontfix.
status-firefox52: affected → wontfix
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