diff --git a/frontend/src/lib/components/EditableSchemaForm.svelte b/frontend/src/lib/components/EditableSchemaForm.svelte
index f88b2ba508664..ba6959315e275 100644
--- a/frontend/src/lib/components/EditableSchemaForm.svelte
+++ b/frontend/src/lib/components/EditableSchemaForm.svelte
@@ -246,11 +246,13 @@
 		{#if !noPreview}
 			<Pane bind:size={inputPanelSize} minSize={20}>
 				<div class="flex flex-col pr-2 gap-2">
-					<div class="w-full justify-left pr-2">
-						<div style={`width: calc(100% - ${pannelButtonWidth - pannelExtraButtonWidth}px);`}>
-							<slot name="addProperty" />
+					{#if $$slots.addProperty}
+						<div class="w-full justify-left pr-2">
+							<div style={`width: calc(100% - ${pannelButtonWidth - pannelExtraButtonWidth}px);`}>
+								<slot name="addProperty" />
+							</div>
 						</div>
-					</div>
+					{/if}
 
 					<SchemaFormDnd
 						schema={previewSchema ? previewSchema : schema}
diff --git a/frontend/src/lib/components/FirstStepInputs.svelte b/frontend/src/lib/components/FirstStepInputs.svelte
index 0484e9b981001..6f7b690c3fb25 100644
--- a/frontend/src/lib/components/FirstStepInputs.svelte
+++ b/frontend/src/lib/components/FirstStepInputs.svelte
@@ -115,7 +115,7 @@
 			</FlowModuleSchemaItemViewer>
 		</button>
 	{:else}
-		<Alert type="warning" title="Cannot load first step's inputs">
+		<Alert type="warning" title="Cannot load first step's inputs" size="xs">
 			{error}
 		</Alert>
 	{/if}