This is the same issue as https://www.drupal.org/node/1252178 for D8. This request is not simply in order to bring us in feature parity with D8 - it's been mentioned in various issues like #189, #214, #801 and latest in #988. It was listed in #211 but dropped as N/A back then. Reconsider?
GitHub Issue #:
1009
Recent comments
UPDATE: I fixed the errors that I found in the logs. They were related to deleting an old blog content type pulled over from Drupal that was still referenced in one of the layouts. I updated...
missing "add block" in custom layout
Hmmm... this sounds like a bug with Copy Blocks. Would this possibly be related: https://github.com/backdrop-contrib/copy_blocks/issues/26 https://github.com/backdrop-contrib/...
missing "add block" in custom layout
Also this error: Warning: Undefined array key "blog" in summary() (line 63 of /app/core/modules/layout/plugins/access/entity_bundle_layout_access.inc). I did recently delete an old blog...
missing "add block" in custom layout