diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__OneTimeDonations.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__OneTimeDonations.kt
index 45acd4724a..90c7bb3123 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__OneTimeDonations.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__OneTimeDonations.kt
@@ -30,6 +30,7 @@ import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.components.settings.app.subscription.permits.DonationPermits
 import org.thoughtcrime.securesms.database.InAppPaymentTable
 import org.thoughtcrime.securesms.database.SignalDatabase
+import org.thoughtcrime.securesms.testing.DisableAnimationsRule
 import org.thoughtcrime.securesms.testing.GooglePayTestRule
 import org.thoughtcrime.securesms.testing.InAppPaymentsRule
 import org.thoughtcrime.securesms.testing.RxTestSchedulerRule
@@ -54,6 +55,9 @@ class CheckoutFlowActivityTest__OneTimeDonations {
   @get:Rule
   val composeRule = createEmptyComposeRule()
 
+  @get:Rule
+  val animationsRule = DisableAnimationsRule()
+
   private val intent = CheckoutFlowActivity.createIntent(InstrumentationRegistry.getInstrumentation().targetContext, InAppPaymentType.ONE_TIME_DONATION)
 
   @Before
diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__RecurringDonations.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__RecurringDonations.kt
index 803e703916..a6bb9f7737 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__RecurringDonations.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__RecurringDonations.kt
@@ -29,6 +29,7 @@ import org.thoughtcrime.securesms.database.SignalDatabase
 import org.thoughtcrime.securesms.database.model.InAppPaymentSubscriberRecord
 import org.thoughtcrime.securesms.database.model.databaseprotos.InAppPaymentData
 import org.thoughtcrime.securesms.keyvalue.SignalStore
+import org.thoughtcrime.securesms.testing.DisableAnimationsRule
 import org.thoughtcrime.securesms.testing.GooglePayTestRule
 import org.thoughtcrime.securesms.testing.InAppPaymentsRule
 import org.thoughtcrime.securesms.testing.RxTestSchedulerRule
@@ -59,6 +60,9 @@ class CheckoutFlowActivityTest__RecurringDonations {
   @get:Rule
   val composeRule = createEmptyComposeRule()
 
+  @get:Rule
+  val animationsRule = DisableAnimationsRule()
+
   private val intent = CheckoutFlowActivity.createIntent(InstrumentationRegistry.getInstrumentation().targetContext, InAppPaymentType.RECURRING_DONATION)
 
   @Before
diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__Redemption.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__Redemption.kt
index ac7f58f5f0..7df01ce4f4 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__Redemption.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__Redemption.kt
@@ -26,6 +26,7 @@ import org.thoughtcrime.securesms.database.DonationReceiptTable
 import org.thoughtcrime.securesms.database.InAppPaymentTable
 import org.thoughtcrime.securesms.database.SignalDatabase
 import org.thoughtcrime.securesms.database.model.InAppPaymentReceiptRecord
+import org.thoughtcrime.securesms.testing.DisableAnimationsRule
 import org.thoughtcrime.securesms.testing.GooglePayTestRule
 import org.thoughtcrime.securesms.testing.InAppPaymentsRule
 import org.thoughtcrime.securesms.testing.RxTestSchedulerRule
@@ -59,6 +60,9 @@ class CheckoutFlowActivityTest__Redemption {
   @get:Rule
   val composeRule = createEmptyComposeRule()
 
+  @get:Rule
+  val animationsRule = DisableAnimationsRule()
+
   private val intent = CheckoutFlowActivity.createIntent(InstrumentationRegistry.getInstrumentation().targetContext, InAppPaymentType.ONE_TIME_DONATION)
 
   @Before
diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/DonationsCheckoutSpecTest.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/DonationsCheckoutSpecTest.kt
index e407ca6c62..27605d04ea 100644
--- a/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/DonationsCheckoutSpecTest.kt
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/DonationsCheckoutSpecTest.kt
@@ -27,6 +27,7 @@ import org.thoughtcrime.securesms.database.DonationReceiptTable
 import org.thoughtcrime.securesms.database.InAppPaymentTable
 import org.thoughtcrime.securesms.database.SignalDatabase
 import org.thoughtcrime.securesms.database.model.InAppPaymentReceiptRecord
+import org.thoughtcrime.securesms.testing.DisableAnimationsRule
 import org.thoughtcrime.securesms.testing.GooglePayTestRule
 import org.thoughtcrime.securesms.testing.InAppPaymentsRule
 import org.thoughtcrime.securesms.testing.RawFlag
@@ -69,6 +70,9 @@ class DonationsCheckoutSpecTest(private val spec: DonationsCheckoutTestSpec) {
   @get:Rule
   val composeRule = createEmptyComposeRule()
 
+  @get:Rule
+  val animationsRule = DisableAnimationsRule()
+
   @Before
   fun setUp() {
     SignalDatabase.inAppPayments.writableDatabase.deleteAll(InAppPaymentTable.TABLE_NAME)
diff --git a/app/src/androidTest/java/org/thoughtcrime/securesms/testing/DisableAnimationsRule.kt b/app/src/androidTest/java/org/thoughtcrime/securesms/testing/DisableAnimationsRule.kt
new file mode 100644
index 0000000000..0fb966d066
--- /dev/null
+++ b/app/src/androidTest/java/org/thoughtcrime/securesms/testing/DisableAnimationsRule.kt
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2026 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.testing
+
+import android.provider.Settings
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.rules.ExternalResource
+import java.io.FileInputStream
+
+/**
+ * Disables system animation scales for the duration of a test and restores them afterward.
+ *
+ * Espresso and [android.app.Instrumentation.waitForIdleSync] only make progress once the main looper is idle. An
+ * on-screen indeterminate animation (e.g. the checkout's `CircularProgressIndicator`) posts frame callbacks forever, so
+ * the looper never idles and any idle-gated wait hangs indefinitely rather than timing out. Forcing the scales to 0
+ * stops those animations so the looper can idle.
+ *
+ * Writes go through the shell (`UiAutomation`), which holds `WRITE_SECURE_SETTINGS`; the app process does not.
+ */
+class DisableAnimationsRule : ExternalResource() {
+
+  private val scales = listOf(
+    Settings.Global.WINDOW_ANIMATION_SCALE,
+    Settings.Global.TRANSITION_ANIMATION_SCALE,
+    Settings.Global.ANIMATOR_DURATION_SCALE
+  )
+
+  private lateinit var previous: Map<String, Float>
+
+  override fun before() {
+    val resolver = InstrumentationRegistry.getInstrumentation().targetContext.contentResolver
+    previous = scales.associateWith { Settings.Global.getFloat(resolver, it, 1f) }
+    scales.forEach { putScale(it, 0f) }
+  }
+
+  override fun after() {
+    if (::previous.isInitialized) {
+      previous.forEach { (key, value) -> putScale(key, value) }
+    }
+  }
+
+  private fun putScale(key: String, value: Float) {
+    val stream = InstrumentationRegistry.getInstrumentation().uiAutomation.executeShellCommand("settings put global $key $value")
+    FileInputStream(stream.fileDescriptor).use { it.readBytes() }
+  }
+}
diff --git a/app/src/testShared/org/thoughtcrime/securesms/testing/endpoints/ResponderWebSocketConnection.kt b/app/src/testShared/org/thoughtcrime/securesms/testing/endpoints/ResponderWebSocketConnection.kt
index e76f544080..e5d8222ed3 100644
--- a/app/src/testShared/org/thoughtcrime/securesms/testing/endpoints/ResponderWebSocketConnection.kt
+++ b/app/src/testShared/org/thoughtcrime/securesms/testing/endpoints/ResponderWebSocketConnection.kt
@@ -8,6 +8,7 @@ package org.thoughtcrime.securesms.testing.endpoints
 import io.reactivex.rxjava3.core.Observable
 import io.reactivex.rxjava3.core.Single
 import io.reactivex.rxjava3.subjects.BehaviorSubject
+import org.signal.libsignal.net.ChatConnection
 import org.signal.network.websocket.WebSocketRequestMessage
 import org.signal.network.websocket.WebSocketResponseMessage
 import org.signal.network.websocket.WebsocketResponse
@@ -99,6 +100,10 @@ class ResponderWebSocketConnection(
 
   override fun sendResponse(response: WebSocketResponseMessage) = Unit
 
+  override suspend fun <T> runWithChatConnection(callback: (ChatConnection) -> T): T {
+    throw IOException("Responder does not provide a libsignal chat connection")
+  }
+
   private fun parseHeaders(headers: List<String>): Map<String, String> {
     return headers.mapNotNull { header ->
       val separator = header.indexOf(':')