Откройте - http://www.youtube.com/html5 и убедитесь, что Вы не участник бета-тестирования html5 версии YouTube.

В адресной строке ввести - opera:config#UserPrefs|ShowDropdownButtonInAddressfield поставить галочку и сохранить в конце блока.

CHR-562 desktop-stable-28-1147: upgrade chromium to 1500.29
DNA-5885 Removed redundant space in UA string.
DNA-5634 Cancel printing when invoked from thumbnail renderer.
DNA-5667 Command–U should open page source
DNA-5730 Restore the badge using the dropdown.
DNA-5876 Flatten the plugin placeholder html files, fix the resource paths.
DNA-4330 Accepting TOS text should be displayed also in installer options
DNA-5658 Add a flag to prevent autoupdate from happening and use it in protocol/file handlers
DNA-5958 One more place a magic is used changed.
Use constant instead of ugly magic numbers.
DNA-5785 Always update highlight of button
DNA-5718 [Mac] Move FavoriteCollectionObserver into ToolbarController code
DNA-5928 Hide overlay when dropping non-extension in opera://extensions.
DNA-5824 Do not focus page view when sliding toolbar is closed.
DNA-5915 Initialize ProxyResolverV8 properly.
DNA-5863 Crash in opera_crashinspector
Show loading state in status bubble
Fix copyright header
DNA-5917 [mac] ShouldProceedWithDownload returns wrong values
DNA-5918 Fix for Mac final stream build
DNA-5725 Fix for crash caused by sliding toolbar
DNA-5882 Try to make sure -[PopupBlockedAnimation setCurrentProgress:] not crash
DNA-5859 Fixed problem with download button after restart.
DNA-5861 Progress bar during install never moves
DNA-5763 Index loaded favorites.
DNA-5856 Will not migrate downloads with unknown state (crash fix)
DNA-5860 Take the fetcher is deleter earlier then the check into account.
Schedule next run based on how many components are checked, not how many are registered.
DNA-5870 Fix hosted apps on redirects.
DNA-5420 remove unnecessary code, code review changes
Auto-updating should not be triggered when binary is running from DMG (read only)
DNA-5584 ESC @ addressbar = 3 different actions.
DNA-2923 ESC = unselect text
DNA-2668 ESC = stop page loading
ESC = exit fullscreen
DNA-5144 ESC = close javasript popup dialog
DNA-5408 Load images one row up and two rows down in Discover.
DNA-5847 'Opera restored after crash' notification is now shown only in first active tab
DNA-4749 Show error message for failed SD extension installation.
DNA-3915 [win] Recently closed list has blank entries for some pages
DNA-4104 Shortcut keys in the omenu looks grayed out
DNA-5476 Enable / keypress as inline search
DNA-5703 Installer language list should list languages in their own script
DNA-5833 Native buttons in Web views are square on Mac
DNA-5760 cursor in Discover and Stash
DNA-5828 hack for 'Themes' translation
DNA-3856 Open in New Private Window should be greyed out on link context menu on private window
DNA-5823 Allow to break the words anywhere in opera:downloads
DNA-5777 Opera Next shortcut with capital N.
DNA-5292 Using keyboard to select opera://[specific_pages] from drop down suggestion doesn't work
DNA-5256 Internal pages displayed in dropdown when letter "a" is typed in the address field
DNA-5764 Ensure deleted favs are removed from FavoriteIndex.
DNA-5057 Text should never overflow the icons in the address field
DNA-5636 Fixed crash when changing zoom level.
DNA-5796 Remove "Import and Export" from file menu when nothing is import/exportable
DNA-5689 [Mac] Add/Remove Speed Dial/Stash context menu entries
Stash and speed dial buttons in address bar are always updated when change is made in the menu in all browser windows
DNA-3107 Web view stops painting when context menus are open
DNA-3512 Top toolbar should not have a bottom border on Mac
DNA-5637 Fix warnings about require(webstore) in extension code
Piggyback: Fix include paths.
Piggyback: use case-insensitive comparison for extensions.
Piggy-back: Set event.handled flag in NotificationDialogView::OnKeyEvent
Piggy-back: Alt+Right @ addressbar = select next search engine
Piggy-back: Alt+Right @ addressbar = select next search engine