Imagine the following scenario:
We have an app where users logs in. We have a “submit feedback” button which opens a fibery public form in a new browser tab
The user gets to its and the first thing they see is “enter your name and email”
when they would be justified in thinking
“I already authenticated in your app, why are you asking me for the name and email again>”
Wouldn’t it be better if we already pre-populated the name and email such as by passing those via url params?