Playing with my desktop at home, I get the same behaviour as you, in that tab-docking works in Unity and not in Unity 2D.
It is my laptop at work where I cannot get the tab-docking to work, in either Unity OR Unity 2D. I suspect my laptop is falling-back to Unity 2D. I can see the following in my .xession-errors file: gnome-session[13133]: WARNING: Session 'ubuntu' runnable check failed: Exited with code 1 (gnome-settings-daemon:13181): color-plugin-WARNING **: failed to get edid: unable to get EDID for output (gnome-settings-daemon:13181): color-plugin-WARNING **: unable to get EDID for xrandr-default: unable to get EDID for output (gnome-settings-daemon:13181): color-plugin-WARNING **: failed to reset xrandr-default gamma tables: gamma size is zero unity-2d-shell: [DEBUG] bool KeyMonitor::registerEvents(): Could not open device: Virtual core pointer unity-2d-shell: [DEBUG] bool KeyMonitor::registerEvents(): Could not open device: Virtual core keyboard unity-2d-panel: [DEBUG] Scanning panel plugin directory "/usr/lib/unity-2d/plugins/panel" unity-2d-panel: [DEBUG] Loading panel plugin: "/usr/lib/unity-2d/plugins/panel/libpanelplugin-appindicator.so" unity-2d-panel: [DEBUG] Loading panel plugin: "/usr/lib/unity-2d/plugins/panel/libpanelplugin-appname.so" unity-2d-panel: [DEBUG] Loading panel plugin: "/usr/lib/unity-2d/plugins/panel/libpanelplugin-indicator.so" unity-2d-panel: [DEBUG] Loading panel plugin: "/usr/lib/unity-2d/plugins/panel/libpanelplugin-legacytray.so" unity-2d-panel: [DEBUG] Loading panel plugin: "/usr/lib/unity-2d/plugins/panel/libpanelplugin-separator.so" ... Ho hum. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996091 Title: Can't drag a Chromium tab into another Chromium's window in Unity 2D To manage notifications about this bug go to: https://bugs.launchpad.net/unity-2d/+bug/996091/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
