diff --git a/platform/jewel/ide-laf-bridge/ide-laf-bridge-tests/src/test/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProviderTest.kt b/platform/jewel/ide-laf-bridge/ide-laf-bridge-tests/src/test/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProviderTest.kt
new file mode 100644
index 000000000000..f4777cd78d24
--- /dev/null
+++ b/platform/jewel/ide-laf-bridge/ide-laf-bridge-tests/src/test/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProviderTest.kt
@@ -0,0 +1,32 @@
+// Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
+package org.jetbrains.jewel.bridge.actionSystem
+
+import com.intellij.openapi.actionSystem.ActionUpdateThread
+import com.intellij.openapi.progress.ProcessCanceledException
+import org.jetbrains.jewel.bridge.ComposeSemanticsTreeUtils
+import org.jetbrains.jewel.foundation.InternalJewelApi
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertSame
+import org.junit.Test
+
+@OptIn(InternalJewelApi::class)
+public class ComposePasteProviderTest {
+    @Test
+    public fun `paste provider updates on EDT`() {
+        assertSame(ActionUpdateThread.EDT, ComposePasteProvider().actionUpdateThread)
+    }
+
+    @Test
+    public fun `focused component lookup returns null when semantics traversal fails`() {
+        assertNull(
+            ComposeSemanticsTreeUtils.findFocusedComponent {
+                throw NullPointerException("transient Compose semantics tree mutation")
+            }
+        )
+    }
+
+    @Test(expected = ProcessCanceledException::class)
+    public fun `focused component lookup does not swallow cancellation`() {
+        ComposeSemanticsTreeUtils.findFocusedComponent { throw ProcessCanceledException() }
+    }
+}
diff --git a/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/ComposeSemanticsTreeUtils.kt b/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/ComposeSemanticsTreeUtils.kt
index 9dc847dfe0ff..48a76a3387a3 100644
--- a/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/ComposeSemanticsTreeUtils.kt
+++ b/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/ComposeSemanticsTreeUtils.kt
@@ -5,6 +5,7 @@ import androidx.compose.ui.awt.ComposePanel
 import androidx.compose.ui.semantics.CustomAccessibilityAction
 import androidx.compose.ui.semantics.SemanticsActions
 import androidx.compose.ui.semantics.SemanticsNode
+import androidx.compose.ui.semantics.SemanticsOwner
 import androidx.compose.ui.semantics.SemanticsProperties
 import androidx.compose.ui.semantics.getAllSemanticsNodes
 import androidx.compose.ui.semantics.getOrNull
@@ -14,13 +15,29 @@ import org.jetbrains.jewel.foundation.InternalJewelApi
 @Internal
 @InternalJewelApi
 public object ComposeSemanticsTreeUtils {
-    public fun ComposePanel.findFocusedComponent(): SemanticsNode? {
-        return semanticsOwners.firstNotNullOfOrNull { o ->
-            o.getAllSemanticsNodes(mergingEnabled = true).firstOrNull {
-                it.config.getOrNull(SemanticsProperties.Focused) == true
+    /**
+     * Returns the currently focused semantics node from this [ComposePanel], or `null` if there is none.
+     *
+     * This lookup fail-closes when Compose reports a transiently inconsistent semantics tree during mutation.
+     */
+    public fun ComposePanel.findFocusedComponent(): SemanticsNode? = findFocusedComponent { semanticsOwners }
+
+    /**
+     * Returns the currently focused semantics node from [semanticsOwners].
+     *
+     * The Compose semantics tree can be transiently inconsistent while it is being mutated, so this lookup fail-closes
+     * on [NullPointerException] and lets callers behave as if no focused Compose component is available.
+     */
+    internal fun findFocusedComponent(semanticsOwners: () -> Iterable<SemanticsOwner>): SemanticsNode? =
+        try {
+            semanticsOwners().firstNotNullOfOrNull { o ->
+                o.getAllSemanticsNodes(mergingEnabled = true).firstOrNull {
+                    it.config.getOrNull(SemanticsProperties.Focused) == true
+                }
             }
+        } catch (_: NullPointerException) {
+            null
         }
-    }
 
     public fun SemanticsNode.isEditableTextField(): Boolean {
         // Check if the node has editable text or supports setting text
diff --git a/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProvider.kt b/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProvider.kt
index 15730180f139..890ab2c6b042 100644
--- a/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProvider.kt
+++ b/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/actionSystem/ComposePasteProvider.kt
@@ -25,7 +25,8 @@ public class ComposePasteProvider : PasteProvider {
 
     override fun isPasteEnabled(dataContext: DataContext): Boolean = isPastePossible(dataContext)
 
-    override fun getActionUpdateThread(): ActionUpdateThread = ActionUpdateThread.BGT
+    // This needs to run on the EDT, or we risk synchronization issues like JEWEL-1359
+    override fun getActionUpdateThread(): ActionUpdateThread = ActionUpdateThread.EDT
 
     private fun getPasteAction(dataContext: DataContext): AccessibilityAction<() -> Boolean>? {
         val contextComponent = dataContext.getData(PlatformCoreDataKeys.CONTEXT_COMPONENT)