Setting caretHidden for a TextInput component on iOS (iPhone SE 3) causes continuous metal rendering errors

使用 npm install 和 npm run ios -- --simulator="iPhone SE 3" 在必需的示例应用中复现该问题，然后检查 RCTUITextField.mm 第 216 行附近以及 RCTUITextView.mm 第 369-378 行附近的代码。对比启用 caretHidden 时的行为，并在字段获得焦点时查看 Metal 日志。对于已复现的 iOS TextInput 用例，不再出现连续的 Surface 1073741823 x 1073741823 is too large 错误即表示完成。

Description

Setting the caretHidden prop on a <TextInput> component when rendered on iOS results in an error that spams the iOS logs (~ 20-30 times per second):

Surface 1073741823 x 1073741823 is too large

As the error is generated so frequently this creates a lot of activity on the app. In my use case this is causing XCUITest to wait continuously for the app to be idle which never happens, so our end to end tests tend to stall when displaying a text input with a hidden caret.

We are using the iPhone SE 3 in the simulator for our testing which shows the error, it does not seem to occur with the iPhone 17 Pro, I haven't tested other phones but the obvious difference is the home button on the SE 3. I was able to reproduce this problem on a fresh v0.87 metro app with a single text input.

I believe this may be due to calculations that use the caret position that run even though the caret is not displayed, though I'm not 100% sure.

RCTUITextField.mm (for single line input) and RCTUITextView.mm for multi line input both set the caret to CGRectZero which would give it dimensions and size of 0, which I could see causing the problem, though I'm not sure what code is using these values for calculations.

Steps to reproduce

1. Install the app with npm install
2. Run the app on iOS on the iPhone SE 3 with npm run ios -- --simulator="iPhone SE 3"
3. Open the Console.app and start viewing logs for the simulator (you can filter by metal to make the error more clear)
4. Focus the input field by tapping on it
5. Check the errors in the console app

React Native Version

0.87.1

Affected Platforms

Runtime - iOS

Output of npx @react-native-community/cli info

System:
  OS: macOS 26.6.2
  CPU: (14) arm64 Apple M4 Pro
  Memory: 435.84 MB / 48.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 24.11.0
    path: /Users/mario/.local/share/mise/installs/node/24.11.0/bin/node
  Yarn:
    version: 1.22.22
    path: /Users/mario/.local/share/mise/installs/node/24.11.0/bin/yarn
  npm:
    version: 11.6.1
    path: /Users/mario/.local/share/mise/installs/node/24.11.0/bin/npm
  Watchman:
    version: 2026.01.12.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/mario/.local/share/mise/installs/ruby/3.4.8/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.2
      - iOS 26.2
      - macOS 26.2
      - tvOS 26.2
      - visionOS 26.2
      - watchOS 26.2
  Android SDK:
    API Levels:
      - "29"
      - "33"
      - "35"
      - "36"
    Build Tools:
      - 33.0.2
      - 35.0.0
      - 36.0.0
    System Images:
      - android-28 | Google APIs ARM 64 v8a
      - android-29 | Google APIs ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2025.3 AI-253.32098.37.2534.15336583
  Xcode:
    version: 26.2/17C52
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: javac 17
    path: /Users/mario/.local/share/mise/shims/javac
  Ruby:
    version: 3.4.8
    path: /Users/mario/.local/share/mise/installs/ruby/3.4.8/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 20.2.0
    wanted: 20.2.0
  react:
    installed: 19.2.3
    wanted: 19.2.3
  react-native:
    installed: 0.87.1
    wanted: 0.87.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Stacktrace or Logs

Subsystem: com.apple.coreanimation
Category: Metal
Surface 1073741823 x 1073741823 is too large

MANDATORY Reproducer

https://github.com/mariovisic/react-native-example-ios-carret-error

Screenshots and Videos