Saving and reopening (simple) new extension shows undefined properties

[bytesinmotion]

I just created a new extension. Just basic infos and created one Domain object with two properties.
Saving works fine and database definition all is ok.

Now I load it in the extensionBuilder and the two properties I defined show up as "undefined" and are empty.
Saving of course gives error. I tried to reenter the values for the properties. Saved, reopened. Same problem.

Tried with "typo3-12-reactjs" and with "v12-load-old-extensions" - same problem

Attached the simple definition

ExtensionBuilder.json

[PKuhlmay]

Thank you, I am currently on it as I needed to refactor the extension loading. This should be solved soon.

[bytesinmotion]

Is there a working version for TYPO3 v12 around? Can be buggy I just would need to create base structure and tables.

[DavidBruchmann]

@bytesinmotion I created a folder with the extension key and moved your json file inside.
After this I could open and also change your mini-extension. I added the field description and it was saved in the extension.
I also could open another module in the BE and open the extension again in Extension Builder.
I used the branch typo3-12-reactjs.
So perhaps you've to pull to update the branch?

This is the file after my change: ExtensionBuilder.json

[bytesinmotion]

Perfect. Yeah I haven't needed the extension_builder since when I posted this issue.
I need to create a new custom extension now and saw no update so I just wanted to confirm. Thanks!

[DavidBruchmann]

thanks for the feedback!
@PKuhlmay I think the issue can be closed then.