Does the Capacitor Preferences plugin work while offline on iOS?

I use Capacitor Preferences to manage some basic preferences in my app. However, I’ve noticed when testing on an iPhone with a version of my app built in XCode (not the PWA), if I set the iPhone to airplane mode and then try to do an operation that reads a value from the Preferences plugin, then I get undefined instead of the correct value.

When I test on a PWA in my web browser, it works fine.

I’m going to try to debug this further but I’m wondering if this is a known issue with Capactiro Preferences or if anyone has seen similar behavior.