FSE: The alignment option is missing from the toolbar for blocks in Site Editor

[zdenys]

Quick summary

The alignment option is missing from the toolbar for blocks in Site Editor while it's present in Post/Page Editor

Site Editor	Post/Page Editor
---	---

Steps to reproduce

1. Create a new site at https://wordpress.com/start and you will land into the Site Editor at the end
2. Select a block that does have an alignment option generally (such as Group, Cover, etc.)
3. See no alignment option
4. Create a new post/page
5. Add a Group or Cover block

What you expected to happen

In the Site Editor I expect to see the alignment option for all blocks that do have it normally (such as Cover, group, etc.) in the post/Page editor.

What actually happened

The alignment option is missing from the toolbar for blocks in Site Editor while it's present in Post/Page Editor

Context

I previously reported this similar issue #60249

Simple, Atomic or both?

Simple

Theme-specific issue?

Tested with Zoologist theme so far.

Browser, operating system and other notes

macOS Monterrey 12.1 with Chrome 97

Reproducibility

Consistent

Severity

Some (< 50%)

Available workarounds?

No but the platform is still usable

Workaround details

No response

[kimerlin81]

Thanks @zdenys! This issue has been triaged as I was able to reproduce it (shown below).
It seems that in the Site Editor - the Cover block now shows the alignment option, but the Group block still does not:

Screen.Capture.on.2022-03-02.at.10-51-09.mp4

[Addison-Stavlo]

It seems that all top level containers directly on a template have no alignment setting and are forced as full width, while nesting the block in a top-level container (like moving the cover inside a group block) allows for the alignment setting to show up and be set.

For example, the noted 'Cover' block example above in the Site Editor. On the template level this setting is unavailable, while once this is in the context of a post and nested, the setting becomes available: