add Roboto Mono font as replacement for Cascadia.
ADD
WalletWasabi.Fluent/Assets/Fonts/RobotoMono-Regular.ttf
WalletWasabi.Fluent/Assets/Fonts/RobotoMono-Regular.ttf
Binary files /dev/null and b/WalletWasabi.Fluent/Assets/Fonts/RobotoMono-Regular.ttf differ

MODIFY
WalletWasabi.Fluent/Styles/Styles.axaml
WalletWasabi.Fluent/Styles/Styles.axaml
<sys:Double x:Key="IconElementThemeHeight">16</sys:Double>
<Easing x:Key="FluentEasing">0.4,0,0.6,1</Easing>
<KeySpline x:Key="FluentKeySpline">0.4,0,0.6,1</KeySpline>
- <FontFamily x:Key="MonospacedFont">avares://WalletWasabi.Fluent/Assets/Fonts/CascadiaCode.ttf</FontFamily>
+ <FontFamily x:Key="MonospacedFont">avares://WalletWasabi.Fluent/Assets/Fonts#Roboto Mono</FontFamily>
<FontFamily x:Key="WasabiLogoTextFont">avares://WalletWasabi.Fluent/Assets/Fonts#Objectivity</FontFamily>
<sys:Int32 x:Key="MaxLabelLength">50</sys:Int32>
</Styles.Resources>

add Roboto Mono font as replacement for Cascadia.