Chrome: 68.0.3425.0 Canary
Braille display: Focus 40

Repro steps:
#Enable ChromeVox
#Connect the focus 40
#Check that ChromeVox announces and displays "braille display connected"
#Try disconnecting the display and waiting at least 10 seconds before reconnecting
#Try disconnecting and reconnecting the display without waiting

Expected: The display should reconnect without having to wait

Actual: The display does not reconnect if you don't wait 10 seconds or so before reconnecting it.
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