In Thunderbird latest nightly builds on Windows 7, only the former titlebar area is a click and drag target. All of the other glass area is not. This is incorrect. The glass either needs to be removed or made a drag target.

In Bug 569400 comment 26 + ff I already tried this, but it never worked. If you can point me to a solution I'd be happy. I tried it today again. Now with: #mail-toolbox > toolbar { -moz-binding: url("chrome://global/content/bindings/toolbar.xml#toolbar-drag"); } the toolbars aren't shown anymore. But with: #mail-toolbox { -moz-binding: url("chrome://global/content/bindings/toolbar.xml#toolbar-drag"); } the toolbars are shown but dragging is still not working.

This is egregious enough that I actually turned off the tabbar in the main window. On sub-windows (which still have the 'aero' menus, as well) it's quite irritating because there's no clear distinction between "draggable" and "non-draggable"

It appears this problem happens in Firefox as well (turn on the menu bar and try to drag the window around using the menu or tab bar - it doesn't work). Asa, any ideas on who would know about this?

In Firefox 11, the tab-bar drags as expected if there's no menubar. When the menu is active (but not "sticky"), a click in the empty "glass" in the menubar region just closes the menu bar and gets swallowed. With the menu active and "always on" (again, in FF 11) the drag action has no effect, as Jim says.

This is fixed longer time ago. Closing it.