diff --git a/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiThreadView.vue b/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiThreadView.vue
index f574ced047a..60475063285 100644
--- a/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiThreadView.vue
+++ b/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiThreadView.vue
@@ -913,14 +913,6 @@ function handleWorkflowFailures(report: WorkflowFailuresReport) {
 	display: flex;
 	min-width: 0;
 	overflow: hidden;
-	position: relative;
-	z-index: 0;
-
-	// Drop the stacking context while the workflow preview iframe NDV is
-	// fullscreen so its `z-index` can escape and paint above the sidebar.
-	&:has([data-test-id='workflow-preview-iframe'][data-ndv-open]) {
-		z-index: auto;
-	}
 }
 
 .chatArea {
diff --git a/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiView.vue b/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiView.vue
index bc3d5346d92..872dc0865e2 100644
--- a/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiView.vue
+++ b/packages/frontend/editor-ui/src/features/ai/instanceAi/InstanceAiView.vue
@@ -131,14 +131,6 @@ onUnmounted(() => {
 	width: 100%;
 	min-width: 0;
 	overflow: hidden;
-	position: relative;
-	z-index: 0;
-
-	// Drop the stacking context while the workflow preview iframe NDV is
-	// fullscreen so its `z-index` can escape and paint above the sidebar.
-	&:has([data-test-id='workflow-preview-iframe'][data-ndv-open]) {
-		z-index: auto;
-	}
 }
 
 .sidebar {
diff --git a/packages/frontend/editor-ui/src/features/ai/instanceAi/components/InstanceAiPreviewTabBar.vue b/packages/frontend/editor-ui/src/features/ai/instanceAi/components/InstanceAiPreviewTabBar.vue
index 39c87e9b126..63eadcbfc4b 100644
--- a/packages/frontend/editor-ui/src/features/ai/instanceAi/components/InstanceAiPreviewTabBar.vue
+++ b/packages/frontend/editor-ui/src/features/ai/instanceAi/components/InstanceAiPreviewTabBar.vue
@@ -182,7 +182,7 @@ async function handleCopyLink(tab: ArtifactTab) {
 }
 
 @keyframes scrollfade {
-	0% {
+	0.1% {
 		--left--fade: 0;
 	}
 	10%,
@@ -193,7 +193,7 @@ async function handleCopyLink(tab: ArtifactTab) {
 	90% {
 		--right--fade: 3rem;
 	}
-	100% {
+	99.9% {
 		--right--fade: 0;
 	}
 }