User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 Build ID: 20140911151253 Steps to reproduce: Get Image that is bigger than your screen resolution Open image in Firefox you will see a plus icon as a mouse symbol while hovering over it right-click to get the context menu try to click on the image to zoom in Actual results: the symbol changes to a minus symbol but the image stays zoomed out you can click as much as you want, the only thing changing is the mouse symbol if you reload the page and click on the image directly after that it zooms in press again -> zoom out etc. press right-click to open context-menu, click again on the image -> the zoom works Expected results: the issue above only happens for the first right-click press in the image viewer press a different mouse key and the zoom after that will work fine even if you press right-click Hopefully you can fix this small issue in the next version. I'm not sure about the component that is affected by this. Maybe the image lib. I'm using Windows 7 64bit at the moment and the newest official release in the 32 branch. Regards, Felix
wfm with Firefox32 and Firefox trunk on Windows7 and this image : http://mversen.de/mozilla/bigimage.jpg
OK actually I found out that this issue is caused by Image Zoom: https://addons.mozilla.org/de/firefox/addon/image-zoom/ I reported the issue on the project's github page: https://github.com/jasadams/imagezoom/issues/22 But I don't think that it will ever be fixed, because the last commits happened over a year ago...
Moving from Core::Untriaged to Core::General https://bugzilla.mozilla.org/show_bug.cgi?id=1407598