685be24dfe fix(login): disable auto-capitalization, auto-correct and spell checking for usernames (#11129)
# Which Problems Are Solved

This PR introduces several HTML attributes to the username/ID input
field to **prevent unwanted automatic capitalization and correction** on
mobile devices (iOS and Android).

Specifically, this addresses the common issue where a mobile keyboard
defaults to an uppercase letter for the first character, even when the
input (like a username or email) should be lowercase.

# How the Problems Are Solved

The following attributes have been added to the `<input>` field:

| Attribute | Value | Purpose |
| :--- | :--- | :--- |
| `autoCapitalize` | `none` | **Crucial fix:** Prevents the virtual
keyboard from capitalizing the first letter. |
| `autoCorrect` | `off` | Prevents the operating system from
auto-correcting input (e.g., changing "teh" to "the"). |
| `spellCheck` | `false` | Disables the red squiggly lines for
spell-checking. |

# Additional Changes

None.

Previously:

~Introduces a default `Content-Type` request header in the `.env` file
to increase compatibility for developing `zitadel-login` and call a
non-local Zitadel API. The `Host` header is also added as a
commented-out reference so developers will be reminded to set this one
too. This is needed for supporting calls to a Zitadel deployed behind an
AWS ALB, for example.~
https://github.com/zitadel/zitadel-charts/pull/460

# Additional Context

This attribute was already present:

| Attribute | Value | Purpose |
| :--- | :--- | :--- |
| `autoComplete` | `username` | Provides a semantic hint to password
managers to correctly suggest and fill stored usernames. |

## Rationale and References (MDN Web Docs)

| Attribute | Why we use it | Reference Link |
| :--- | :--- | :--- |
| **`autoCapitalize="none"`** | Overrides default OS sentence
capitalization behavior. | [MDN:
autocapitalize](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/autocapitalize)
|
| **`autoCorrect="off"`** | Essential for case-sensitive or specific
identifiers where correction must be disabled (primarily iOS). | [MDN:
autocorrect](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/autocorrect)
|
| **`spellCheck="false"`** | Usernames are not dictionary words, so
spell-checking is distracting/irrelevant. | [MDN:
spellcheck](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/spellcheck)
|
| **`autoComplete="username"`** | Modern standard for indicating a login
field, supporting password managers. | [MDN:
autocomplete](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/autocomplete)
|

## Browser Safety Concern

This change is **safe**. These attributes act as "hints" to the browser
and OS. If a particular older browser does not support one of the
attributes, it will simply ignore it and revert to its default behavior,
introducing **no errors** or breaking changes. The combination used is
considered best practice for secure and predictable input fields.

- Discussion #11124

---------

Co-authored-by: Copilot <[email protected]>
Co-authored-by: Ramon <[email protected]>
2026-03-04 07:50:16 +00:00
2026-03-02 08:37:44 +01:00
2023-07-17 10:08:20 +02:00
2024-07-26 22:39:55 +02:00
2021-02-08 16:48:41 +01:00
2025-04-02 16:53:06 +02:00
2026-02-04 11:51:43 +01:00
2026-02-25 19:36:00 -03:00

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