Find toolbar does not always update position/visibility in WPF application

Description
The find toolbar does not always update its position/visibility when used in a WPF application:

• When the WebView2 UIElement is removed from the visual tree (e.g. switching tabs) the find toolbar remains open.
• When moving the WPF window, the find toolbar remains stationary. However, it does update correctly when resizing the window.

Version
SDK: 1.0.961.33
Runtime: 93.0.961.38
Framework: WPF (.NET Framework 4.8)
OS: Win10

Repro Steps

• Create a WPF window containing a WebView2 inside a TabControl with multiple tabs.
• Navigate to a website and perform a find (CTRL-F).
• Move the window by dragging the titlebar. The find toolbar should move accordingly but remains stationary.
• Select another tab. The find toolbar should disappear but remains visible.

<Window x:Class="WebView2Test.BrowserWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WebView2Test"
        xmlns:wpf="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
        Title="BrowserWindow" Height="450" Width="800">
    <Grid>
        <TabControl Margin="20">
            <TabItem Header="First">
                <wpf:WebView2 Source="https://github.com/" />
            </TabItem>
            <TabItem Header="Second" />
        </TabControl>
    </Grid>
</Window>

Screenshots
https://user-images.githubusercontent.com/90454870/133047772-01de37db-37ac-4c3e-ac3c-525d7e17733e.mp4