Whenever I want to manage my launcher shelf, this is what happens:
1. I click to the icon I want to remove with Tab.
2. I attempt to try modifier key plus M to bring up a menu, I hold it down, but when the keys are released, the focus goes away. Even when I try the next step, the focus goes away.
3. I want to unpin a certain icon, like Gmail, from the launcher shelf. Even when I have it highlighted with the keys, I seriously cannot get it to successfully unpin. When I try the same steps but with Shift Plus Volume Up/F10 key, the same thing occurs.Mode: force_next
Version: 51.0.2704.37
Reproduction Steps: 
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