feat(FormField): Support error icons #33577

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1. hb20007

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   needs triageThis issue needs to be triaged by the teamThis issue needs to be triaged by the team

   on Jul 23, 2026
2. angular-robot

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   area: material/form-field

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   on Jul 23, 2026
3. crisbeto

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   P3An issue that is relevant to core functions, but does not impede progress. Important, but not urgentAn issue that is relevant to core functions, but does not impede progress. Important, but not urgent

   and removed

   needs triageThis issue needs to be triaged by the teamThis issue needs to be triaged by the team

   on Aug 3, 2026
4. varshini03 commented on Aug 24, 2026

   

   varshini03

   on Aug 24, 2026

   Last edited by varshini03

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   I believe this can be addressed with a documentation/example update as this is completely possible-
   Placing a <mat-icon> with matSuffix inside a mat-form-field and conditionally showing it via email.invalid && email.touched achieves the expected M3 error icon behavior. I tried this out locally and have attached screenshot of the same.

   

   Happy to raise PR if a maintainer can confirm if just this doc update is preferred, or if it is expected to be added as a separate component, alongside the existing error field. @crisbeto
5. crisbeto

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   on Sep 25, 2026