AMP title and description does not appear
When i test AMP here: https://search.google.com/test/amp?view=search-preview&id=u6WWDObNoK-XFHdQpeMZng post title or description are not visible, there is only the default ones:


IIRC this always worked this way for non-amp pages, PR deployment was detected properly, and Google cached AMP there:

I think that it's using this as placeholder until it will be fetched by Google properly (same as with publisher information).
Looks like it's just the way it's displayed on preview tool, because it seems to work there:

It's looking better when i preview your post here https://search.google.com/test/amp?view=search-preview&id=Q9OYVC7dulfCrUWpc16P3Q but here is still missing description and title.

I don't think it's an bug as it works in real results:
I don't know what an issue is (if any), so I will deassign myself from it and wait 'till someone can identify the problem.