diff --git a/src/manager/event_handlers.ts b/src/manager/event_handlers.ts
index d2f948b..e2cce2b 100644
--- a/src/manager/event_handlers.ts
+++ b/src/manager/event_handlers.ts
@@ -24,7 +24,6 @@ import {
     getRoundedCornersCfg,
     getRoundedCornersEffect,
     shouldEnableEffect,
-    unwrapActor,
     updateShadowActorStyle,
     windowScaleFactor,
 } from './utils.js';
@@ -43,10 +42,12 @@ export function onAddEffect(actor: RoundedWindowActor) {
         return;
     }
 
-    unwrapActor(actor)?.add_effect_with_name(
-        ROUNDED_CORNERS_EFFECT,
-        new RoundedCornersEffect(),
-    );
+    actor
+        .get_last_child()
+        ?.add_effect_with_name(
+            ROUNDED_CORNERS_EFFECT,
+            new RoundedCornersEffect(),
+        );
 
     const shadow = createShadow(actor);
 
@@ -80,7 +81,7 @@ export function onAddEffect(actor: RoundedWindowActor) {
 
 export function onRemoveEffect(actor: RoundedWindowActor): void {
     const name = ROUNDED_CORNERS_EFFECT;
-    unwrapActor(actor)?.remove_effect_by_name(name);
+    actor.get_last_child()?.remove_effect_by_name(name);
 
     // Remove shadow actor
     const shadow = actor.rwcCustomData?.shadow;
diff --git a/src/manager/event_manager.ts b/src/manager/event_manager.ts
index e707049..df92df5 100644
--- a/src/manager/event_manager.ts
+++ b/src/manager/event_manager.ts
@@ -135,10 +135,20 @@ function applyEffectTo(actor: RoundedWindowActor) {
     // In wayland sessions, the surface actor of XWayland clients is sometimes
     // not ready when the window is created. In this case, we wait until it is
     // ready before applying the effect.
-    if (!actor.firstChild) {
-        const id = actor.connect('notify::first-child', () => {
-            applyEffectTo(actor);
-            actor.disconnect(id);
+    // For Blur My Shell compatibility, we have to make sure that the actor is
+    // not a bms-application-blurred-widget. This actor is created by BMS and
+    // is not the actual window actor.
+    const bmsActorName = 'bms-application-blurred-widget';
+    const actorReady =
+        (actor.firstChild && actor.firstChild.name !== bmsActorName) ||
+        (actor.lastChild && actor.lastChild.name !== bmsActorName);
+
+    if (!actorReady) {
+        const id = actor.connect('child-added', (actor, child) => {
+            if (child.name !== bmsActorName) {
+                applyEffectTo(actor);
+                actor.disconnect(id);
+            }
         });
 
         return;
diff --git a/src/manager/utils.ts b/src/manager/utils.ts
index b570626..4fda923 100644
--- a/src/manager/utils.ts
+++ b/src/manager/utils.ts
@@ -18,19 +18,6 @@ import type Clutter from 'gi://Clutter';
 import type {RoundedCornersEffect} from '../effect/rounded_corners_effect.js';
 import type {Bounds, RoundedCornerSettings} from '../utils/types.js';
 
-/**
- * Get the actor that rounded corners should be applied to.
- * In Wayland, the effect is applied to WindowActor, but in X11, it is applied
- * to WindowActor.first_child.
- *
- * @param actor - The window actor to unwrap.
- * @returns The correct actor that the effect should be applied to.
- */
-export function unwrapActor(actor: Meta.WindowActor): Clutter.Actor | null {
-    const type = actor.metaWindow.get_client_type();
-    return type === Meta.WindowClientType.X11 ? actor.get_first_child() : actor;
-}
-
 /**
  * Get the correct rounded corner setting for a window (custom settings if a
  * window has custom overrides, global settings otherwise).
@@ -67,11 +54,8 @@ type RoundedCornersEffectType = InstanceType<typeof RoundedCornersEffect>;
 export function getRoundedCornersEffect(
     actor: Meta.WindowActor,
 ): RoundedCornersEffectType | null {
-    const win = actor.metaWindow;
     const name = ROUNDED_CORNERS_EFFECT;
-    return win.get_client_type() === Meta.WindowClientType.X11
-        ? (actor.firstChild.get_effect(name) as RoundedCornersEffectType)
-        : (actor.get_effect(name) as RoundedCornersEffectType);
+    return actor.lastChild.get_effect(name) as RoundedCornersEffectType;
 }
 
 /**