non-Torbutton SSL Observatory + hotel network => lots of cert warnings
If the user enables the SSL Obseravtory in non-Torbutton mode, and they land on a network that MITMs TLS, the browser will render a stream of certificate warnings caused by Observatory submissions.
What we should do instead is save up the certs for submission once the network stops attacking us.
This can be achieved with nsIBadCertListener2.
This is probably blocking the popup for the Observatory for non-Torbutton users.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information