Couple of small misc. changes

Author: vnbaaij

examples/Demo/Shared/Pages/List/Autocomplete/AutocompletePage.razor

@@ -6,6 +6,12 @@
 
 <h1>Autocomplete</h1>
 
+<blockquote>
+    @(new MarkupString(DemoNavProvider.EditFormOffIcon))
+    The <b>FluentAutocomplete</b> component is not yet fully compatible with the <code>EditForm</code> and <code>FluentEditForm</code> elements.
+    Some functionalities, such as error messages, the requirement message or the validation messages are missing.
+</blockquote>
+
 <h2 id="example">Examples</h2>
 
 <DemoSection Title="Default" Component="@typeof(AutocompleteDefault)" />

src/Core/Components/List/FluentSelect.razor.cs

@@ -20,7 +20,7 @@ public partial class FluentSelect<TOption> : ListComponentBase<TOption> where TO
         .AddStyle($"#{Id}::part(listbox)", "position", "relative", Multiple)
         .AddStyle($"#{Id}::part(listbox)", "max-height", Height, !string.IsNullOrWhiteSpace(Height))
         .AddStyle($"#{Id}::part(listbox)", "height", "fit-content", !string.IsNullOrWhiteSpace(Height))
-        .AddStyle($"#{Id}::part(listbox)", "z-index", ZIndex.SelectPopup.ToString())
+        .AddStyle($"#{Id}::part(listbox)", "z-index", ZIndex.SelectPopup.ToString(), !Multiple)
         .AddStyle($"#{Id}::part(selected-value)", "white-space", "nowrap")
         .AddStyle($"#{Id}::part(selected-value)", "overflow", "hidden")
         .AddStyle($"#{Id}::part(selected-value)", "text-overflow", "ellipsis")