Coroutine Channel- Flow collect issue

I am using one activity, the multiple fragment model, in my application. I have a sharedViewModel with the coroutine Channel to send and receive data from one fragment to another fragment. Also, I have a custom Dialog fragment as a popup across the app and its user action will observe the remaining fragments. My problem here is the event send from the custom dialog is not triggering in the fragment collect part frequently(2/5 Click). I am adding the codebase for your reference.

SharedView Model Part

private val _cornerDataChannel = Channel<CornerData>()
val cornerDataEvent: Flow<CornerData> = _cornerDataChannel.receiveAsFlow()

fun updateCornerDataEvent(data: CornerData) = viewModelScope.launch {
     Log.e(TAG, "Event Added")
     _cornerDataChannel.send(data)
}

Sending part in the Custom Dialog Fragment

 private fun myToolSelectionCallBack(tool: ToolDTO) =
        viewModel.updateCornerDataEvent(CornerData.ToolData(tool))

 private fun systemStreamSelectionCallBack(stream: StreamDTO) =
        viewModel.updateCornerDataEvent(CornerData.StreamData(stream))

Receiving Part inside fragments

 private fun observeCornerItemSelectionCallBack() = lifecycleScope.launchWhenStarted {
        viewModel.cornerDataEvent.collect { event ->
            when (event) {
                is StreamData -> streamSelectionCallBack(data= event.data)
                is ToolData -> toolSelectionCallBack(data = event.data)
            }
        }
    }

In the receiver part, some user clicks are missing freqently. But it's always getting the update part under the view model.