UI Toolkit UI not appearing in build but is in simulator and game

Good day,

I made a simple scene with a simple UI using UI Toolkit and it works fine in the game and simulator view. But, it does not appear in the Android build. I realize this is a general question but I’ve been troubleshooting for days and cannot find any reason why this would be.

Though my question is broad, would anyone know of a reason why the build would not include the UI. Perhaps there’s a simple step or build setting that I’m overlooking. I’ll include a screenshot but that doesn’t really demonstrate the issue. The UI is just not visible in the build.

Also, does anyone know how I could better debug an issue like this, rather than making changes, building, installing on my phone, repeat?

Thank you kindly.

Have you perhaps designed the UI documents with “Editor Extension Authoring” enabled on the document?

Also make a development build and check your player.log for any errors.