This is a confirmed bug, @Mevi, as you can see in this post,
(@Mevis words) "Please include the information that I have made a test for this with the id 65329-6-1"
The thing is that is that when a page has a page parameter (when auth is enabled in the app), the page doesnt open when using the open page function and the user is NOT logged in.
On the other hand, when the user logged in, the page opens normally.
Here you can find an example showcasing the problem.
(I dont know if this is related, but in this app 317474, the preview also doesnt work and there is an other case about that bug)