Frame size not applying? - XAML MAUI - xaml

Question

I am trying to make a frame a specific size but the frame seems to only match the size with components inside of the frame.
I tried finding solutions but couldn't find anything, perhaps I am searching for the wrong things.
The XAML:
<ScrollView>
<VerticalStackLayout
Spacing="25"
Padding="30,0"
VerticalOptions="Center">
<Frame BackgroundColor="#303030"
Padding="8" CornerRadius="5"
HeightRequest="500" WidthRequest="500">
<StackLayout Spacing="10">
<Label Text="Login" FontSize="Medium" FontAttributes="Bold" />
<BoxView Color="{DynamicResource Primary}" HeightRequest="2" HorizontalOptions="Fill" />
<Entry Placeholder="Username" />
<Entry Placeholder="Password" IsPassword="True" />
<Button Text="Login" BackgroundColor="{DynamicResource Primary}" TextColor="{DynamicResource White}" />
</StackLayout>
</Frame>
</VerticalStackLayout>
</ScrollView>
What it looks like:
What I want it to look like:

Answer 1

View toolmakersteve's response if you have this "issue" too!
Code:
<ScrollView>
<VerticalStackLayout
Spacing="25"
Padding="30,0"
VerticalOptions="Center"
WidthRequest="400"
HeightRequest="400">
<Border BackgroundColor="#303030"
Padding="8">
<StackLayout Spacing="10">
<Label Text="Login" FontSize="Medium" FontAttributes="Bold" />
<BoxView Color="{DynamicResource Primary}" HeightRequest="2" HorizontalOptions="Fill" />
<Entry Placeholder="Username" />
<Entry Placeholder="Password" IsPassword="True" />
<Button Text="Login" BackgroundColor="{DynamicResource Primary}" TextColor="{DynamicResource White}" Clicked="LoginClick" />
</StackLayout>
</Border>
</VerticalStackLayout>
</ScrollView>
Result: