The display name, filter string, and tooltips for the property editor (and associated detail customizations) are now stored as FText rather than FString. This allows us to remove SLATE_TEXT_ARGUMENT from the detail customization widgets.
[CL 2372595 by Jamie Dale in Main branch]
This is an API breaking change. If you previously experimented with media assets, you will have to rebuild your Blueprints, UMG widgets, etc. If you don't want to lose your existing Blueprints, you can add the following line to your project's Engine.ini, which will map the old class name to the new one (you will still need to replace existing MediaAsset nodes with MediaPlayer nodes):
[/Script/Engine.Engine]
+ActiveClassRedirects=(OldClassName="MediaAsset",NewClassName="MediaPlayer")
[CL 2291399 by Max Preussner in Main branch]
