PWA frustrations:
They all disappear when you change homescreens.
I've bookmarked them all in a folder in Firefox Android, but then have to go through the whole add-to-homescreen dance again on any new homescreen 
A browser offline screen has explanatory text written by you, the browser maker. The error handling and user communication in native apps is a dice roll. Seems weird to gamble on this.
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Then again making your own screen will take you like 15 min or less... Just a small service worker returning some HTML when you are offline
Thanks. Twitter will use this to make your timeline better. UndoUndo
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