When the navigation block only contains a page list, there are no color options

[carolinan]

Description

Using Wordpress 6.0 RC2, without or without Gutenberg current trunk,
I am seeing a regression in Twenty Twenty-two where the navigation block does not have color options if it only contains the page list block.

This is a problem because it means we cannot change the link color, and because there is a problem with the link color inheritance that makes the submenu item have white text on white background:
#40908

First I would appreciate a sanity check to confirm if this can be reproduced.

Step-by-step reproduction instructions

1. Install the WordPress 6-0 nightly using the beta tester
2. Open the Site Editor
3. Select the navigation block: Don't customize the block, it should fall back to the markup in TT2:

<!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"}} -->
<!-- wp:page-list {"isNavigationChild":true,"showSubmenuIcon":true,"openSubmenusOnClick":false} /-->
<!-- /wp:navigation -->

4. View the block settings sidebar, notice that the color options are missing.

Screenshots, screen recording, code snippet

Environment info

• WordPress 6.0-RC2-53389
  -beta tester plugin
  With or without Gutenberg current trunk

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

Yes

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

No

[carolinan]

Actually there are more panels missing than the colors.
-If I add a link menu item, and then remove it, the missing panels re-appear.

[draganescu]

I tested this and it seems the color panel is missing only when the dafault markup menu is selecte. The same configuration manually built (a navigation block with a single page list block child shows the color options.

Later edit: the unsaved blocks output does not place the controls in the inspector. Working on a PR.