Remove the unnecessary margins.
MODIFY
WalletWasabi.Gui/Tabs/LegalDocumentsView.xaml
WalletWasabi.Gui/Tabs/LegalDocumentsView.xaml
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:controls="clr-namespace:WalletWasabi.Gui.Controls;assembly=WalletWasabi.Gui"
x:Class="WalletWasabi.Gui.Tabs.LegalDocumentsView">
- <controls:GroupBox Title="{Binding Title}" BorderThickness="0" Classes="docTabContainer">
- <Grid Classes="content" Margin="10">
+ <controls:GroupBox Title="{Binding Title}" BorderThickness="0" Classes="docTabContainer" Margin="0">
+ <Grid Classes="content">
<controls:ExtendedTextBox Text="{Binding Text}" Classes="selectableTextBlock" TextWrapping="Wrap" AcceptsReturn="True" />
</Grid>
</controls:GroupBox>

Remove the unnecessary margins.