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Are Instant Apps broken ?

Hello everyone,

I was looking for StackOverflow pages when I saw on the search result google the application logo and the "instant" text (the application is opening on an instant application because I do not have the application).

All that happens is a kind of white and white screen, then it opened the page instead.

Are the instant applications broken? (I launch the latest beta version of Android O)

** edit **: opted for a beta version, and an instant application works on N.