IssueTracker

It appears that onClick for tv foundation's Button does not require key down. As seen in the below implementation, you will get three activities if you initially long click on the button and do not release until after the next activity has started.

Component used: TV

Version used: foundation 1.0.0-alpha10

Devices/Android versions reproduced on:
Chromecast with Google TV

Code:
var activityCount = 0

class MainActivity : ComponentActivity() {

    @OptIn(ExperimentalTvMaterial3Api::class)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        activityCount++
        setContent {
            MyApplicationTheme {
                Column(
                    modifier = Modifier.fillMaxSize(),
                ) {
                    Text("Activity Count: $activityCount")

                    Button(
                        onLongClick = {
                            startActivity()
                        },
                        onClick = {
                            startActivity()
                        }
                    ) {
                        Text("Android")
                    }
                }
            }
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        activityCount--
    }

    private fun startActivity() {
        startActivity(Intent(this, MainActivity::class.java))
    }
}