MaterialComboBoxStyle missing right padding on items

[mikernet]

Current behavior

Expected behavior

Items should be padded evenly on each side by default. The style also does not honor a custom Padding value set on the combo box like the default style does.

How to reproduce it (as minimally and precisely as possible)

<ComboBox Style="{StaticResource MaterialComboBoxStyle}"
          ItemsSource="{x:Bind Model.Items, Mode=OneWay}" />

<ComboBox Padding="20" Style="{StaticResource MaterialComboBoxStyle}"
          ItemsSource="{x:Bind Model.Items, Mode=OneWay}" />

Environment

Package Version(s):

Latest dev.

Affected platform(s):

• [ ] iOS
• [ ] Android
• [x] WebAssembly
• [x] UWP
• [ ] MacOS