Block variation title not displayed in block sidebar

[florianbrinkmann]

Description

I have a block with variations, and in the block inserter I see the correct title of the variation. But after adding a variation to the content, I get the block’s name instead of the variation name in the block sidebar.

It works for the social icons core block, but I cannot get it working for the variation for my custom block.

Step-by-step reproduction instructions

I created a small example plugin with a Variation title bug block that has a One variation variation: https://github.com/florianbrinkmann/variation-title-bug
Just download the repo, add the One variation to a post or page and you should get the string Variation! in the editor but the Variation title bug name in the right block sidebar instead of One Variation.

Screenshots, screen recording, code snippet

No response

Environment info

WordPress 6.0.2 without Gutenberg and no other active plugins

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[t-hamano]

I think it is due to the missing isActive property.
For your repository, the following code would work:

{
  "variations": [
    {
      "name": "one-variation",
      "title": "One variation",
      "attributes": {
        "isVariation": true
      },
      "isActive": ["isVariation"]
    }
  ],
}

The reference for variations includes the following statement:

It’s worth mentioning that setting the isActive property can be useful for cases you want to use information from the block variation, after a block’s creation. For example, this API is used in useBlockDisplayInformation hook to fetch and display proper information on places like the BlockCard or Breadcrumbs components.

[florianbrinkmann]

Thanks a lot @t-hamano, that was the problem! And, sorry for not reading the docs in detail before creating an issue 😬

[t-hamano]

At the same time, I convert from issue to discussion because I think this is not a Gutenberg problem.