There is a reason why GNOME have lost to KDE and why it will lag behind it for years to come. GNOME's open dialog is one. Epiphany browser is another.
When it starts up, it looks just like any other browser. But when you try to actually use it, it kicks and screams and has everything the opposite way from what a normal user wants. Its navigation buttons are extra large, taking almost an inch in height on my monitor, with no way to resize them. Its preference menu is almost empty. You want no popups for certain pages? - NO, you can only disable popups for all or enable them for all. You want new pages to open in tabs instead of new windows? - NO, I haven't found an option for that yet.
And bookmarks... this is the true epiphany of stupidity. I wanted a simple toolbar with a couple of buttons which will take me to the bookmarked page. First I tried to add the toolbar - I went to View and then checked 'Bookmarks Bar' - ok so far, the toolbar appeared. But there is no way to add bookmarks to it. After I removed the unneeded search dialog, the toolbar is blank and can't be populated. Well, not loosing hope, I went to Edit -> Toolbars - a dialog appeared. But still no way to add bookmarks! Instead there is "Add a New Toolbar" button. As promised, it added an empty toolbar. But still I can't add anything to it! What is the use? And better yet - I can't remove this new toolbar! Now I have two empty toolbars, one of which I cannot remove. Wonderful! What were developers thinking - that is if they were and did not just sprinkle random gui elements around a canvas?