BlackBerry Product Manager, Michael Crawley, tweeted recently the company is working on a fix. He gave no release date for the fix, but he says they are working on it.
To re-post separately, we may have a fix for the Passport flickering issue and are currently testing this.— Michael Clewley (@MichaelClewley) February 23, 2015
Crawley also suggests that rebooting the Passport once per day cuts down on the number of times the flicker happens.
As a workaround for the Passport flickering issue we've seen a daily reset reduce the amount it happens.— Michael Clewley (@MichaelClewley) February 23, 2015