diff --git a/app/src/main/java/org/tasks/injection/BaseWorker.kt b/app/src/main/java/org/tasks/injection/BaseWorker.kt
index 1a06b7ab9..c4661a568 100644
--- a/app/src/main/java/org/tasks/injection/BaseWorker.kt
+++ b/app/src/main/java/org/tasks/injection/BaseWorker.kt
@@ -14,7 +14,7 @@ abstract class BaseWorker(
 ) : Worker(context, workerParams) {
 
     override fun doWork(): Result {
-        Timber.d("%s.doWork()", javaClass.simpleName)
+        Timber.d("${javaClass.simpleName} $id $inputData")
         return try {
             runBlocking {
                 run()
diff --git a/app/src/main/java/org/tasks/jobs/WorkManagerImpl.kt b/app/src/main/java/org/tasks/jobs/WorkManagerImpl.kt
index 0bc03768e..7ee4fc97d 100644
--- a/app/src/main/java/org/tasks/jobs/WorkManagerImpl.kt
+++ b/app/src/main/java/org/tasks/jobs/WorkManagerImpl.kt
@@ -101,7 +101,7 @@ class WorkManagerImpl(
             builder.setInitialDelay(1, TimeUnit.MINUTES)
         }
         val append = getSyncJob().any { it.state == WorkInfo.State.RUNNING }
-        Timber.d("sync: immediate=$immediate, append=$append)")
+        Timber.d("sync immediate=$immediate append=$append")
         enqueue(workManager.beginUniqueWork(
                 TAG_SYNC,
                 if (append) APPEND_OR_REPLACE else REPLACE,
diff --git a/app/src/main/java/org/tasks/opentasks/OpenTaskContentObserver.kt b/app/src/main/java/org/tasks/opentasks/OpenTaskContentObserver.kt
index d133040ea..9d4ae468d 100644
--- a/app/src/main/java/org/tasks/opentasks/OpenTaskContentObserver.kt
+++ b/app/src/main/java/org/tasks/opentasks/OpenTaskContentObserver.kt
@@ -8,15 +8,19 @@ import android.net.Uri
 import android.os.Handler
 import android.os.HandlerThread
 import dagger.hilt.android.qualifiers.ApplicationContext
-import org.dmfs.tasks.contract.TaskContract.*
+import org.dmfs.tasks.contract.TaskContract.Properties
+import org.dmfs.tasks.contract.TaskContract.TaskLists
+import org.dmfs.tasks.contract.TaskContract.Tasks
 import org.tasks.R
+import org.tasks.preferences.Preferences
 import org.tasks.sync.SyncAdapters
 import timber.log.Timber
 import javax.inject.Inject
 
 class OpenTaskContentObserver @Inject constructor(
-        @ApplicationContext context: Context,
-        private val syncAdapters: SyncAdapters,
+    @ApplicationContext context: Context,
+    private val syncAdapters: SyncAdapters,
+    private val preferences: Preferences,
 ) : ContentObserver(getHandler()), SyncStatusObserver {
 
     val authority = context.getString(R.string.opentasks_authority)
@@ -24,14 +28,23 @@ class OpenTaskContentObserver @Inject constructor(
     override fun onChange(selfChange: Boolean) = onChange(selfChange, null)
 
     override fun onChange(selfChange: Boolean, uri: Uri?) {
-        if (selfChange || uri == null) {
-            Timber.d("Ignoring onChange(selfChange = $selfChange, uri = $uri)")
-            return
-        } else {
-            Timber.v("onChange($selfChange, $uri)")
-        }
+        when {
+            selfChange || uri == null ->
+                Timber.v("Ignoring onChange selfChange=$selfChange uri=$uri")
+
+            uri.getQueryParameter("caller_is_syncadapter")?.toBoolean() == true-> {
+                Timber.d("onChange uri=$uri")
+                syncAdapters.sync(immediate = true)
+            }
 
-        syncAdapters.syncOpenTasks()
+            preferences.isSyncOngoing ->
+                Timber.v("Ignoring onChange uri=$uri sync in progress")
+
+            else -> {
+                Timber.d("onChange uri=$uri")
+                syncAdapters.sync(immediate = true)
+            }
+        }
     }
 
     override fun onStatusChanged(which: Int) {
diff --git a/app/src/main/java/org/tasks/sync/Debouncer.kt b/app/src/main/java/org/tasks/sync/Debouncer.kt
index 5ac88bec7..530b5ea61 100644
--- a/app/src/main/java/org/tasks/sync/Debouncer.kt
+++ b/app/src/main/java/org/tasks/sync/Debouncer.kt
@@ -7,14 +7,16 @@ class Debouncer(private val tag: String, private val block: suspend (Boolean) ->
     private var count = 0
 
     suspend fun sync(immediate: Boolean) {
-        val thisCount = ++count
-
-        delay(1000)
-
-        if (immediate || thisCount == count) {
-            block(immediate)
+        if (immediate) {
+            block(true)
         } else {
-            Timber.v("debouncing $tag")
+            val thisCount = ++count
+            delay(1000)
+            if (thisCount == count) {
+                block(false)
+            } else {
+                Timber.v("debouncing $tag")
+            }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/org/tasks/sync/SyncAdapters.kt b/app/src/main/java/org/tasks/sync/SyncAdapters.kt
index 1bcec6483..92ad4af0c 100644
--- a/app/src/main/java/org/tasks/sync/SyncAdapters.kt
+++ b/app/src/main/java/org/tasks/sync/SyncAdapters.kt
@@ -7,15 +7,15 @@ import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
 import org.tasks.LocalBroadcastManager
 import org.tasks.R
+import org.tasks.data.OpenTaskDao
+import org.tasks.data.dao.CaldavDao
+import org.tasks.data.dao.GoogleTaskDao
 import org.tasks.data.entity.CaldavAccount.Companion.TYPE_CALDAV
 import org.tasks.data.entity.CaldavAccount.Companion.TYPE_ETEBASE
 import org.tasks.data.entity.CaldavAccount.Companion.TYPE_GOOGLE_TASKS
 import org.tasks.data.entity.CaldavAccount.Companion.TYPE_OPENTASKS
 import org.tasks.data.entity.CaldavAccount.Companion.TYPE_TASKS
-import org.tasks.data.dao.CaldavDao
 import org.tasks.data.entity.FORCE_CALDAV_SYNC
-import org.tasks.data.dao.GoogleTaskDao
-import org.tasks.data.OpenTaskDao
 import org.tasks.data.entity.SUPPRESS_SYNC
 import org.tasks.data.entity.Task
 import org.tasks.jobs.WorkManager
@@ -61,15 +61,7 @@ class SyncAdapters @Inject constructor(
         syncStatus.sync(active)
     }
 
-    fun syncOpenTasks() = scope.launch {
-        sync.sync(true)
-    }
-
-    fun sync() {
-        sync(false)
-    }
-
-    fun sync(immediate: Boolean) = scope.launch {
+    fun sync(immediate: Boolean = false) = scope.launch {
         val caldavEnabled = async { isSyncEnabled() }
         val opentasksEnabled = async { isOpenTaskSyncEnabled() }