works in Safari and FF2.
Created attachment 324098 [details] zip file of Save As Webpage I don't have time to reduce this right now, but here it is, in case the web page changes.
Also happens (in FF3) on Windows and Linux.
The attached zip-file in comment 2 is not reproducible with latest Nightly and release. Considering this, I will mark this issue as Resolved-WORKSFORME. If anyone can still reproduce it, feel free to reopen the issue and provide more information. Thanks -- Version 48.0a1 Build ID 20160419030312 Update Channel nightly User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:48.0) Gecko/20100101 Firefox/48.0
The issue is not reproducible using the given test case in comment 2. The page looks the same in chrome and Firefox.
I can reproduce this issue on: Version 48.0a1 Build ID 20160420030213 Update Channel nightly User Agent Mozilla/5.0 (Windows NT 6.3; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0 I will reopen this bug.
Created attachment 8743581 [details] ChromevsFirefoxNightly.pdf Attached is a comparison of Chrome (left) and Firefox Nightly (right). Notice the white line above and below the changing sweaters.