Unity Issue Tracker - [iOS] Legacy text font fallback does not render all characters for Chinese text when deployed on devices with OS 18+

Active

Under Consideration for 2021.3.X, 2022.3.X, 6000.0.X, 6000.2.X, 6000.3.X, 6000.4.X

Votes

0

Found in

2021.3.57f1

2022.3.67f1

6000.0.60f1

6000.2.8f1

6000.3.0b5

6000.4.0a2

Issue ID

UUM-121660

Regression

No

[iOS] Legacy text font fallback does not render all characters for Chinese text when deployed on devices with OS 18+

-

Oct 09, 2025

How to reproduce:
1. Open the “ReproProject.zip“ project
2. Open the “TestScene“ scene
3. Build for iOS
4. Open the “Unity-iPhone.xcodeproj“ project in Xcode
5. Deploy to a device
6. Observe the “Legacy Arial“ field

Expected result: All 5 characters rendered
Actual result: Only 3 characters rendered

Reproducible with: 2021.3.57f2, 2022.3.67f1, 6000.0.60f1, 6000.2.8f1, 6000.3.0b5, 6000.4.0a2

Reproducible environment: macOS 15.7 (M4 Max), macOS 15.6.1 (M1 Max) (Reporters)
Not reproducible environment: No other environment tested

Reproducible with these devices:
VLNQA00626, iPhone 16 (MYE73QN/A), CPU: Apple A18 Pro, OS: 18.5
VLNQA00648, iPhone Air (MG2P4QN/A), CPU: Apple A19 Pro, OS: 26.0
VLNQA00252 - iPhone Xs Max (MT502ET/A), CPU: t8020, OS: 18.5

Not reproducible with these devices:
VLNQA00535, iPhone XS (MT9F2ET/A), CPU: Apple A12 Bionic, OS: 17.6.1
VLNQA00416, iPhone 13 Pro (MLVA3ET/A), CPU: Apple A15 Bionic, OS: 17.6.1

Note: Only affects the Legacy Text (TMPro and UIToolkit work as expected)

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