It's a little finicky out of the box on Zorin OS, which defaults to flatpak Firefox. But I found I could switch to the snap version and have success installing the additional components necessary. I've also noticed I often need to launch PWAs twice, the first time they close immediately and the second launch they perform fine. I like being able to control whether the PWA uses it's own or a shared profile. I've found the shared profile useful for using Office365 apps like Word, Excel, Outlook, and Teams which I need for work, but isolated profiles are great most of the time.