Chrome Version: 54.0.2840.101 (Official Build) (64-bit)
OS: Crhome

What steps will reproduce the problem?
(1) Have multiple windows open
(2) Drag a tab from one window, and keep the mouse down
(3) Alt-tab to find the window you want to reparent the tab to

What is the expected result?

The way it used to work (when alt-tab just foregrounded each window in turn) is that the tab would stay in a dragging state, so once you found the right window you could just drag it in and release the mouse button.

What happens instead?
When the new tab switcher focuses a window, it "drops" the tab being dragged into its own window, so once you find the right window you have to make sure the window isn't full screen alt-tab once to grab the tab that was dropped, and then drag it into the window, which is still visible in the background. Presumably this is a bug.

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