Extension Editor - Scene properties causing errors

[MathewSchaeffer]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When creating a behavior in the extension editor, trying to use a function that uses a scene property causing a javascript error. Adding the behavior to objects on the scene shows the following error in the console on scene load.

And when trying to use a function that references a behavior scene property ( in this case trying to show the value on a TextObject. The follow error is displayed.

I have uploaded a projects with a very stripped down version of the extention I am trying to make using the extension editor.

ScoreExtension.zip

Steps to reproduce

Create a behavior
Create a scene property (and generate a condition and expression)
Apply behavior to an object - causes first error in console
Try to use a function that references the scene property - javascript error

GDevelop platform

Desktop

GDevelop version

5.5.239

Platform info

Windows 11

Additional context

No response

[MathewSchaeffer]

Looking at this some more, the console error only shows up when action and expression have been generated using the behavior scene properties and objects with the behavior are added to a scene.

Removing the action and expression functions from the behavior removes the error on the console. Looks like behavior scene properties are broken in some way. For now, using extension scene variables as a work around, but I am now wondering what the correct use-case for behavior scene properties are as I cannot find documentation on this.

[D8H]

Thank you for reporting an issue.
The action generated by the editor is incorrect, as a workaround, you can use this action instead: