bug(checkbox): mat-checkbox renders empty <label> when no label is provided

[nileshlad09]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

14.2.7

Description

When a Material checkbox is created without a label, Angular Material still inserts an empty element into the DOM.
This is hidden with display:none, which causes accessibility tools (e.g., Arc Toolkit) to flag it as a violation.

Reproduction

1. Render a Material checkbox without a label in an Angular 19 app.
2. Inspect the DOM - note the empty element.
3. Run Arc Toolkit (chrome extension).
4. The hidden label is flagged as a violation.

Expected Behavior

If no label is provided, no element should be rendered.

Actual Behavior

An empty element is present in the DOM even when no label is specified.

Environment

• Angular: 19
• CDK/Material: 19.2.19

[crisbeto]

Closing this, because:

1. The display: none already takes the element out of the accessibility tree so it doesn't really affect users.
2. mat-checkbox isn't a supported usage to begin with. Adding extra logic to support it isn't worth the performance cost.
3. We have the <mat-pseudo-checkbox/> for the case where you want to show a checkbox in something like a table.