A new comment type is created and added as a field (say x_comments) to a custom entity. The comments show up and work as expected. However when the x_comments field is configured to disable 'Show reply form on the same page as comments' the 'Add new comment' link/button does not get rendered on custom entity pages. When this setting is enabled the comment form is displayed as expected.
Inspecting Drupal core's Article content type has custom Links pseudo field where 'Add new comment' link/button is displayed. However my custom entity does not have such a pseudo field, even if it did comment module would not know about it.
Please share clues on how to make the 'Add new comment' link/button be displayed?
The buildCommentedEntityLinks method is not being called on custom entity which creates the 'Add new comment' link. Hmm