Setting ResizeMode "CanResizeWithGrip" on the window removes Adonis title bar

[ividyon]

Describe the bug
ResizeMode="CanResizeWithGrip" adds a little resize grip element to the bottom right of a window for resizing purposes.

Adding ResizeMode="CanResizeWithGrip" to the definition of the Adonis window makes the title bar disappear.

To Reproduce

<adonisControls:AdonisWindow x:Class="RainbowStoneWPF.MainWindow"
                             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                             xmlns:local="clr-namespace:RainbowStoneWPF"
                             xmlns:adonisControls="clr-namespace:AdonisUI.Controls;assembly=AdonisUI"
                             xmlns:adonisUi="clr-namespace:AdonisUI;assembly=AdonisUI"
                             xmlns:adonisExtensions="clr-namespace:AdonisUI.Extensions;assembly=AdonisUI"
                             mc:Ignorable="d"
                             Title="Rainbow Stone" Width="1280" Height="720"
                             ResizeMode="CanResizeWithGrip"
                             >
    <adonisControls:AdonisWindow.TitleBarContent>
        <StackPanel Orientation="Horizontal"
                    HorizontalAlignment="Right">
            <Button Content="?"
                    Style="{DynamicResource {x:Static adonisUi:Styles.WindowButton}}"
                    FontFamily="Segoe UI"
                    FontSize="14"/>
        </StackPanel>
    </adonisControls:AdonisWindow.TitleBarContent>
    <adonisControls:AdonisWindow.Style>
        <Style TargetType="adonisControls:AdonisWindow"
               BasedOn="{StaticResource {x:Type adonisControls:AdonisWindow}}" />
    </adonisControls:AdonisWindow.Style>
</adonisControls:AdonisWindow>

Expected behavior
There is an Adonis title bar and a resize grip in the bottom corner.

Screenshots

Without ResizeMode line: