Cannot add 'Page Title' and 'Main Content' blocks to panel

Question

Configuration:

• Drupal 8.1.5
• Panels 8.x-3.0-beta4
• Page Manager 8.x-1.0-alpha23
• Layout plugin 8.x-1.0-alpha22
• Panelizer 8.x-3.0-alpha2

When I create a Panel variant for /node/{node} with Page Manager, I can add field blocks, like

• entity_field:node:title
• entity_field:node:body

These get rendered.

However, if I add blocks

• CORE / Page Title (page_title_block)
• SYSTEM / Main page content (system_main_block)

these render to nothing. Can someone explain why?

Answer 1

Answering my own question after I found some more info.

This is indeed a bug, hopefully to be fixed soon: https://www.drupal.org/node/2626090