diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/SplitShadeHeaderController.kt b/packages/SystemUI/src/com/android/systemui/statusbar/phone/SplitShadeHeaderController.kt
index a7ecd06..8732891 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/SplitShadeHeaderController.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/SplitShadeHeaderController.kt
@@ -41,15 +41,28 @@
     private val iconManager: StatusBarIconController.IconManager
     private val qsCarrierGroupController: QSCarrierGroupController
     private var visible = false
+        set(value) {
+            if (field == value) {
+                return
+            }
+            field = value
+            updateListeners()
+        }
 
     var shadeExpanded = false
         set(value) {
+            if (field == value) {
+                return
+            }
             field = value
             updateVisibility()
         }
 
     var splitShadeMode = false
         set(value) {
+            if (field == value) {
+                return
+            }
             field = value
             updateVisibility()
         }
@@ -78,15 +91,20 @@
     }
 
     private fun updateVisibility() {
-        val shouldBeVisible = shadeExpanded && splitShadeMode
-        if (visible != shouldBeVisible) {
-            visible = shouldBeVisible
-            statusBar.visibility = if (shouldBeVisible) View.VISIBLE else View.GONE
-            updateListeners(shouldBeVisible)
+        val visibility = if (!splitShadeMode) {
+            View.GONE
+        } else if (shadeExpanded) {
+            View.VISIBLE
+        } else {
+            View.INVISIBLE
+        }
+        if (statusBar.visibility != visibility) {
+            statusBar.visibility = visibility
+            visible = visibility == View.VISIBLE
         }
     }
 
-    private fun updateListeners(visible: Boolean) {
+    private fun updateListeners() {
         qsCarrierGroupController.setListening(visible)
         if (visible) {
             statusBarIconController.addIconGroup(iconManager)
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/SplitShadeHeaderControllerTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/SplitShadeHeaderControllerTest.kt
new file mode 100644
index 0000000..a9e8164
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/SplitShadeHeaderControllerTest.kt
@@ -0,0 +1,87 @@
+package com.android.systemui.statusbar.phone
+
+import android.content.Context
+import android.content.res.Resources
+import android.test.suitebuilder.annotation.SmallTest
+import android.view.View
+import com.android.systemui.R
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.animation.ShadeInterpolation
+import com.android.systemui.battery.BatteryMeterView
+import com.android.systemui.battery.BatteryMeterViewController
+import com.android.systemui.flags.FeatureFlags
+import com.android.systemui.qs.carrier.QSCarrierGroupController
+import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.mockito.ArgumentMatchers.any
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mock
+import org.mockito.Mockito.`when` as whenever
+import org.mockito.Mockito.verify
+import org.mockito.junit.MockitoJUnit
+
+@SmallTest
+class SplitShadeHeaderControllerTest : SysuiTestCase() {
+
+    @Mock private lateinit var view: View
+    @Mock private lateinit var statusIcons: StatusIconContainer
+    @Mock private lateinit var statusBarIconController: StatusBarIconController
+    @Mock private lateinit var qsCarrierGroupController: QSCarrierGroupController
+    @Mock private lateinit var qsCarrierGroupControllerBuilder: QSCarrierGroupController.Builder
+    @Mock private lateinit var featureFlags: FeatureFlags
+    @Mock private lateinit var batteryMeterView: BatteryMeterView
+    @Mock private lateinit var batteryMeterViewController: BatteryMeterViewController
+    @Mock private lateinit var resources: Resources
+    @Mock private lateinit var context: Context
+    @JvmField @Rule val mockitoRule = MockitoJUnit.rule()
+    var viewVisibility = View.GONE
+
+    private lateinit var splitShadeHeaderController: SplitShadeHeaderController
+
+    @Before
+    fun setup() {
+        whenever<BatteryMeterView>(view.findViewById(R.id.batteryRemainingIcon))
+                .thenReturn(batteryMeterView)
+        whenever<StatusIconContainer>(view.findViewById(R.id.statusIcons)).thenReturn(statusIcons)
+        whenever(statusIcons.context).thenReturn(context)
+        whenever(context.resources).thenReturn(resources)
+        whenever(qsCarrierGroupControllerBuilder.setQSCarrierGroup(any()))
+                .thenReturn(qsCarrierGroupControllerBuilder)
+        whenever(qsCarrierGroupControllerBuilder.build()).thenReturn(qsCarrierGroupController)
+        whenever(view.setVisibility(anyInt())).then {
+            viewVisibility = it.arguments[0] as Int
+            null
+        }
+        whenever(view.visibility).thenAnswer { _ -> viewVisibility }
+        splitShadeHeaderController = SplitShadeHeaderController(view, statusBarIconController,
+        qsCarrierGroupControllerBuilder, featureFlags, batteryMeterViewController)
+    }
+
+    @Test
+    fun setVisible_onlyInSplitShade() {
+        splitShadeHeaderController.splitShadeMode = true
+        splitShadeHeaderController.shadeExpanded = true
+        assertThat(viewVisibility).isEqualTo(View.VISIBLE)
+
+        splitShadeHeaderController.splitShadeMode = false
+        assertThat(viewVisibility).isEqualTo(View.GONE)
+    }
+
+    @Test
+    fun updateListeners_registersWhenVisible() {
+        splitShadeHeaderController.splitShadeMode = true
+        splitShadeHeaderController.shadeExpanded = true
+        verify(qsCarrierGroupController).setListening(true)
+        verify(statusBarIconController).addIconGroup(any())
+    }
+
+    @Test
+    fun shadeExpandedFraction_updatesAlpha() {
+        splitShadeHeaderController.splitShadeMode = true
+        splitShadeHeaderController.shadeExpanded = true
+        splitShadeHeaderController.shadeExpandedFraction = 0.5f
+        verify(view).setAlpha(ShadeInterpolation.getContentAlpha(0.5f))
+    }
+}
\ No newline at end of file