I do not understand why this is not by standard, but if I install a PWA it is not in an isolated environment, instead it uses the standard browser profile.
So if I logged in to a website, I’m also logged in my standard browser session.
So a feature or setting would be nice to have the possibility to install PWA in an isolated environment or profile.
Workaround:
Creating a new profile set it up with extension and settings you want; and then create/install from there the PWA.