Recently viewed products block not working in product page with enabled cache

[kandrejevs]

Steps to reproduce

1. add:
   <block class="Magento\Reports\Block\Product\Widget\Viewed" page_size="4" name="recently_viewed" template="widget/viewed/content/viewed_grid.phtml" cacheable="false" /> to catalog_product_view.xml in any container

Expected result:
With enabled cache you should see recently viewed products block in product page.

Actual result:
Block is visible only with disabled cache, when cache is enabled, it does not have output.

[gavinlimely]

Is there any solution to this?

[yosefkurniawan]

any solution on this?

[pboisvert]

@choukalos can you have Oleh check into this if it may be caching related?

[BenSpace48]

I am having the same problem, any update on this Magento?

[BenSpace48]

@pboisvert @choukalos - Any update please? This has been going on for a while (sorry for asking again but this is proving to be pretty problematic).

[veloraven]

@kandrejevs , @BenSpace48
Please, provide the used Magento version. Was it clear install or upgrade from some other version?

[bpgkt]

I do have 2.1 and the issue is still not resolved.
(i use varnish too)

btw. disabling cache, but keeping varnish on = blocks will show up;

[moloughlin]

I was noticing similar issues where my private_content_version cookie (used for the AJAX fetching of private content) wasn't set, and requesting the page didn't recreate it for me. Interestingly, adding an item to cart recreates the cookie and I'm able to see these blocks again.

In \Magento\Framework\App\PageCache\Version::process, you can see that the private_content_version cookie isn't actually set until the first POST request is made. I suspect this is probably a bug, since sessions can still need to load private content without this precondition being met.

Steps I've used to produce:

• Add the built-in recently viewed widget to some page (I'm using product and category pages)
• Create a new private session
• Load a product page
• Navigate to a page where the widget is expected to appear

Expected result: widget appears
Actual result: no such luck

Now, add a product to the cart and navigate back to the page where the widget appears and it will render as expected.