Created attachment 8492605 [details] firefox-bug-marquee-resize-window.html User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0 Build ID: 20140919030202 Steps to reproduce: - Open the attached file "firefox-bug-marquee-resize-window.html". Do not maximize the window. - Resize the window or maximize it. Actual results: There is a gap where the marquee should have resized. Please check the attached file "firefox-bug-marquee-resize-window.ogv". Expected results: The marquee should fill the gap.