To view the UI Builder project settings, go to Edit > Project Settings > UI Builder. When you create a new UI Document (UXML) in the UI Builder, certain features are set by default:
To ensure that newly created documents are, by default, compatible with Editor UI and that the UI Builder library displays the additional controls for Editor UI, select Enable Editor Extension Authoring by Default. For more information, refer to Enable Editor Extension Authoring for UI Documents (UXML).
To disable zooming on your canvas using your mouse wheel or trackpad, select Disable Viewport Zooming via Mouse Wheel/Trackpad.