docs-bug: v21 documentation is unreachable

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#33,804 2 comments 0 reactions 1 assignee View on GitHub

@crisbeto is already working on this.

Since Sep 15, 2026.

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Description

area: material.angular.io docs gemini-triaged P3
Documentation Feedback

Selecting v21 in the version dropdown on https://material.angular.dev/cdk/categories leads to https://v21.material.angular.dev/cdk/categories. All the links there lead to https://angular.dev/guide/$component, which defaults to v22. Reverting to v21 there leads to the overview page because the documentation for CDK components didn’t exist before v22. This makes old CDK documentation inaccessible.

Whenever there’s an update to how the documentation is laid out, there are lots of dead links. I wish you’d pay more attention to how links to and from old versions behave when you make these changes.

Affected documentation page

https://v21.material.angular.dev/cdk/categories

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