How to see Firefox past web push notification messages?

There’s a lot of web push notifications i get, that i want to get, that disappear too quickly for me to really see them— especially some that are malformed, like the ones from, and say “null” in big letters and the actual information in small letters.

I think in my case it’s not quite using the ideal Ubuntu/PopOS messaging but something else. I cannot find any way to see recent messages that have had their flash and gone, so i’m trying out disabling the system message integration entirely. My hope in getting rid of this in between type of message is that the Firefox “XUL” messages will work better.

There’s definitely not a way in Chrome:

I think Firefox is the same, based on reading through and getting no hint of a history.