Few questions about options and native

[ds3031]

Hi

I have a few questions

1. --use-application-binary option is usefull for what? When i run test, flutter builds app then runs a test. When I run that app binary after that, app will run that test. So I am not sure for what is this option.
2. All of my tests are passing when I run them without option -no-window. But when I run them with that option a lot of test failed and interestingly a lot of them fails randomly (e.g. first run test1.dart pass, 2nd run test1.dart failed). Maybe you have idea where/what I should check?
3. I tried to open an url from google chrome on android but fails randomly. Majority of fails are because of timeout. Emulator didn't open google chrome. I tried to pass parameter visibleTimeout: Duration(seconds: 60) or existsTimeout: Duration(seconds: 60) but it doesn't make any difference (it doesn't take more then 30 seconds to open the google chrome with home page). Then I tried to pass params to NativeAutomatorConfig but then my test won't even start the app.
   When I managed to type (with index: 0) url, await $.native.tap(Selector(text: 'Done'));, await $.native.tap(Selector(text: 'Next'));, await $.tester.testTextInput.receiveAction(TextInputAction.done); or await $.tester.testTextInput.receiveAction(TextInputAction.next); does nothing. Can you help with that? Probably I am doing something wrongly.

Thanks