When accepting the notification from metamask to conects with the interface, it crashes

[MicaelaPesado]

Description:
When the metamask pop up is correctly displayed to connect the wallet with the interface, after confirming the notification, the browser suddenly closes.

Steps to reproduce:

1. Go to https://conditionaltokens.staging.gnosisdev.com/
2. Accept the metamask notification.
3. Observe.

Enviorment:
Browser: Google Chrome
Wallet: Metamask
Computer: Dell Vostro 5100 14 inches

Capture:
https://drive.google.com/open?id=1rqfPS4ZAkQfSc96yMPm0zrsV0_IozlPt