mozilla-mobile/firefox-ios

Korean character input shows incorrect Latin characters in address bar

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#31899 opened on Feb 2, 2026

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Bug 🐞Contributor OKGood first issue

Description

Steps to reproduce

  1. Open Firefox app on iOS
  2. Tap on the address bar
  3. Switch keyboard language to Korean(Bilingual-KR/EN)
  4. Attempt to type the Korean character '마' (or other Korean characters)

Expected behavior

The Korean character '마' should be displayed in the address bar

Actual behavior

The Latin characters 'aak' are displayed instead of intended Korean character

Device & build information

  • Device: ? iPhone 16 pro, 26.2
  • Build version: Firefox 147.3 (67455)
  • First seen version: This bug has been for several months.

*# *## Notes Attachments: https://github.com/user-attachments/assets/e1f4fa86-e428-41b3-b5c4-df4cac9c35c0

:information_source: Reference Person

+@Foxbolts+

┆Issue is synchronized with this Jira Bug

Contributor guide

Tech stack
swift
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
SwiftiOS development
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the address bar text field implementation in the Firefox iOS codebase, likely in the `URLBar` or `AddressBar` components. The issue involves incorrect character mapping for Korean input, suggesting a bug in keyboard or input method handling. Look at text field delegate methods and any custom input processing. Check for similar bugs or related comments in the issue.