Blank bundled app can no longer be edited after update

Hi,

After the recent update, the blank bundled app
https://aistudio.google.com/apps/bundled/blank?showAssistant=true&showCode=true
can no longer be edited.

Previously, I used this page to quickly edit and run temporary small apps for testing or validation. It was very convenient to modify and execute code directly there.

Now it seems to be read-only. If I want to test something, I have to create a new app and then delete it afterward, which is much less convenient.

Is this an intentional change? Is there a way to re-enable editing for the bundled blank app?

Thanks!