I opened a canvas page, clicked "Load assignment in a new window", and I get the error that "The page you were looking for doesn't exist."
I suspect that this is related to third-party cookies, but I tried compatibility mode and it still doesn't work. However, it works just fine in Edge and Chrome. I can give a verified Kagi employee access to my Canvas account if needed.
I opened a canvas page, clicked "Load assignment in a new window", and the google drive LTI opens, giving me access to the document.
0.99.126.4.1-beta
Ventura (13)