[nornagon]

... Also, I just realised it overrides cmd+arrow keys. Those are super important for navigating in text on OS X! Unfortunately I'll have to disable until it doesn't do that, since there doesn't seem to be an option to remap or disable those keybinds.

[joelg]

You can remap or disable keyboard shortcuts in chrome://extensions, I believe! (you might have to enable developer mode first)

Edit - also, dismissing the view with esc. or clicking anywhere is something I should have done from the start. Thanks!