TypeError: null is not an object (evaluating 'this.inputRef.current.blur')

[cortisiko]

This relates to this sentry error: https://sentry.io/organizations/metamask/issues/2907821167/?project=2299799&query=is%3Aunresolved+release.version%3A5.4.0+release.build%3A931&sort=freq&statsPeriod=14d

To reproduce:

Given I have a fresh install of the app 
And I import my wallet
And I land on the wallet view
When I kill the app
And I relaunch the app
Then I get `TypeError: null is not an object (evaluating 'input.blur')`

See here