setAuthentication method doesn't work with autofill

I'm using Autofill service in my app. But there are two problems with that:

1. Presentation view is blinking while clicking on the username/passwords fields. Sometimes it appears but sometimes no.
2. When I'm using setAuthentication method and returning the data set from my activity it doesn't work. It works for auto-filling in regular apps but doesn't work for webbrowsers.

I've already seen a lot of issues reported for chrome etc. but autofilling seems working correctly for example for the Bitwarden or Lastpass app.

This is my code in onFillRequest:

creating presentation:

val manualPresentation = createPresentation("Select password")

Creating data set:

val dataSet = Dataset.Builder()
            .setValue(
                passwordParsedAssistStructure.id,
                AutofillValue.forText(null)
            )
            .setValue(
                usernameParsedAssistStructure.id,
                AutofillValue.forText(null)
            )

 val intent = Intent(applicationContext, AutofillActivity::class.java)
        
val sender = PendingIntent.getActivity(
            applicationContext, id, intent,
            PendingIntent.FLAG_CANCEL_CURRENT
        ).intentSender

val ids = arrayOf(passwordParsedAssistStructure.id, usernameParsedAssistStructure.id)

     
return FillResponse.Builder()
    .addDataset(
                dataSet.build()
            )
    .setAuthentication(ids, sender, manualPresentation)
    .build()

also, I'm passing those ids into my activity and then return it:

 val returnDataset = Dataset.Builder()

        returnDataset.setValue(
            passwordId,
            AutofillValue.forText(String(password))
        ).setValue(
            userId,
            AutofillValue.forText(username)
        )

        val responseBuilder = FillResponse.Builder()
        responseBuilder.addDataset(returnDataset.build())

val replyIntent = Intent().apply {
            putExtra(EXTRA_AUTHENTICATION_RESULT, responseBuilder.build())
}

setResult(Activity.RESULT_OK, replyIntent)
finish()

What am I doing wrong? setAuthentication method should be set on dataSet or fillResponse? Activity should return Dataset or FillResponse?

from setAuthentication method doesn't work with autofill