Dev instance does not show in alias

Sometimes, but not always, when I do a new deployment (even after multiple times loading it) and even after waiting for 2 hours, what shows in my .dev deployment does not show up in my alias (my actual website).

I don’t understand why and the documentation has not helped.

On the “Workers and Pages” screen, when I click on “dev” i do see my full deployment, but when I click on the alias it does not show the same. It seems that one of my (fairly large) .js javascript files is not getting deployed to my alias


Ideas why this might happen?