User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:36.0) Gecko/20100101 Firefox/36.0 Build ID: 20150220131007 Steps to reproduce: This affects several websites. It may or may not be related to the NoSquint addon. Example: 1. Go to duckduckgo.com 2. Change the zoom level for this page [not necessary if NoSquint already sets zoom != 100%] 3. Search for something [zoom level should stay the same] 4. Open any search result [zoom level should stay the same] 5. Go back [zoom level should stay the same but reverts to 100% or some such] Actual results: Going "back" causes the zoom level to change (in my case, from 250% to ~100%, which is nearly unreadable on a 277DPI screen). Expected results: Zoom level should either be the same as when last on that page or, if zoom has been changed since then, going back could keep the new zoom level. Either is sufficient from my perspective (though I'm sure some people have opinions on this; see #908155).