diff --git a/orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneWelcomeScreen.kt b/orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneStartScreen.kt
similarity index 54%
rename from orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneWelcomeScreen.kt
rename to orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneStartScreen.kt
index 4fae1b4d5..b82e14b51 100644
--- a/orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneWelcomeScreen.kt
+++ b/orion-viewer/src/androidTest/kotlin/universe/constellation/orion/viewer/test/espresso/CheckTapZoneStartScreen.kt
@@ -1,8 +1,10 @@
 package universe.constellation.orion.viewer.test.espresso
 
 import android.content.Intent
+import android.graphics.Rect
+import android.view.View
 import androidx.test.espresso.Espresso.*
-import androidx.test.espresso.action.ViewActions
+import androidx.test.espresso.action.ViewActions.*
 import androidx.test.espresso.assertion.ViewAssertions.doesNotExist
 import androidx.test.espresso.assertion.ViewAssertions.matches
 import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
@@ -11,6 +13,8 @@ import androidx.test.ext.junit.rules.activityScenarioRule
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import org.hamcrest.Matchers.*
+import org.junit.Assert.assertArrayEquals
+import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
 import org.junit.Assert.assertTrue
 import org.junit.Rule
@@ -22,8 +26,10 @@ import universe.constellation.orion.viewer.prefs.GlobalOptions
 import universe.constellation.orion.viewer.prefs.OrionApplication
 import universe.constellation.orion.viewer.test.framework.BookDescription
 import universe.constellation.orion.viewer.test.framework.InstrumentationTestCase
+import java.util.concurrent.atomic.AtomicReference
 
-abstract class CheckTapZoneWelcomeScreen(private val showTapHelp: Boolean, intent: Intent) : InstrumentationTestCase() {
+
+abstract class CheckTapZoneStartScreen(private val showTapHelp: Boolean, intent: Intent) : InstrumentationTestCase() {
 
     @get:Rule
     var activityScenarioRule = activityScenarioRule<OrionViewerActivity>(intent.apply {
@@ -33,12 +39,11 @@ abstract class CheckTapZoneWelcomeScreen(private val showTapHelp: Boolean, inten
             putExtra(GlobalOptions.SHOW_TAP_HELP, false)
         }
     })
-
 }
 @RunWith(AndroidJUnit4::class)
-class NoBookNoWelcome: CheckTapZoneWelcomeScreen(true, BookDescription.SICP.toOpenIntent().apply { data = null;}) {
+class NoBookNoStartTapScreen: CheckTapZoneStartScreen(true, BookDescription.SICP.toOpenIntent().apply { data = null;}) {
     @Test
-    fun testWelcome() {
+    fun testStartScreenAbsent() {
         val options =
             (InstrumentationRegistry.getInstrumentation().targetContext.applicationContext as OrionApplication).options
         onView(withId(R.id.tap_help_close)).check(doesNotExist())
@@ -47,18 +52,41 @@ class NoBookNoWelcome: CheckTapZoneWelcomeScreen(true, BookDescription.SICP.toOp
 }
 
 @RunWith(AndroidJUnit4::class)
-class BookWithWelcome: CheckTapZoneWelcomeScreen(true, BookDescription.SICP.toOpenIntent()) {
+class BookWithStartTapScreen: CheckTapZoneStartScreen(true, BookDescription.SICP.toOpenIntent()) {
     @Test
-    fun testWelcome() {
+    fun testStartScreen() {
         val options =
             (InstrumentationRegistry.getInstrumentation().targetContext.applicationContext as OrionApplication).options
         assertTrue(options.isShowTapHelp)
         onView(withId(R.id.tap_help_close)).check(matches(isDisplayed()))
-        onView(withId(R.id.tap_help_close)).perform(ViewActions.click())
-        onView(withId(R.id.tap_help_close)).check(matches(isDisplayed()))
-        onView(withId(R.id.tap_help_close)).check(doesNotExist())
-//
-//        assertFalse(options.isShowTapHelp)
+        checkSizeAndPosition()
+
+        onView(withId(R.id.tap_help_close)).perform(click())
+        //onView(withId(R.id.tap_help_close)).check(doesNotExist())//TODO
+        assertFalse(options.isShowTapHelp)
+    }
+
+    private fun checkSizeAndPosition() {
+        val rect = AtomicReference<Rect>()
+        val loc = AtomicReference<IntArray>()
+        activityScenarioRule.scenario.onActivity { it ->
+            val r = Rect()
+            (it.view as View).getLocalVisibleRect(r)
+            rect.set(r)
+            val l = IntArray(2)
+            (it.view as View).getLocationOnScreen(l)
+            loc.set(l)
+        }
 
+        onView(withId(R.id.tap_help_close)).check { view, noViewFoundException ->
+            val dialogRect = Rect()
+            val rootView = view.rootView
+            rootView.getLocalVisibleRect(dialogRect)
+            assertEquals(rect.get(), dialogRect)
+
+            val l = IntArray(2)
+            rootView.getLocationOnScreen(l)
+            assertArrayEquals(loc.get(), l)
+        }
     }
 }
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