iOS TextField, Korean characters are not normally entered

[YongIseul]

Describe the bug
Korean characters are not normally entered in the TextField of iOS.

Affected platforms

• iOS

Versions

• Kotlin version*: 1.8.20
• Compose Multiplatform version*: 1.4.0
• OS version(s)* (required for Desktop and iOS issues): 16.4
• OS architecture (x86 or arm64): arm64

To Reproduce

source code

   MaterialTheme {
        Column {
            Text("OS: ${getPlatformName()}")
            Text("typing sequence : ㄱ, ㅏ, ㅇ, ㄴ, ㅏ, ㅁ, ㅇ, ㅕ, ㄱ")
            Text("Expected result : 강남역")
            var text by remember { mutableStateOf(TextFieldValue()) }
            TextField(text, onValueChange = { text = it })
        }
    }

Type on the keyboard in the order of ㄱ, ㅏ, ㅇ, ㄴ, ㅏ, ㅁ, ㅇ, ㅕ, ㄱ in Korean

Expected behavior
Like the Android on the left, "강남역" should be displayed in the TextField.

Screenshots

textfield_hangul.mp4

[paxbun]

For those who are not used to the Korean writing system, please refer to this Wikipedia page.

With physical keyboards, 초성 (the initial) and 중성 (the medial) input works well, but 종성 (the final) and diphthong (e.g., ㅟ -> ㅜㅣ) input is divided.

Expected: 다람쥐헌쳇바퀴
Actual: 다라ㅁ주ㅣ허ㄴ체ㅅ바쿠ㅣ

RPReplay_Final1690427240.MP4

I think this and #3416 share the same cause; Chinese input should have a similar issue. It seems not.

[dima-avdeev-jb]

Thanks for such a create description!

[dima-avdeev-jb]

Will be available in next dev build of Compose for iOS

[paxbun]

It seems this issue happens again on iOS 17 simulators (not on iOS 16 simulators and iOS 16 & 17 physical devices), but this happens even in system default apps like Safari right now.

For those who still have the same problem, it would not be the issue of Compose. Please test with physical devices.