rapastranac opened a new issue, #5774:
URL: https://github.com/apache/netbeans/issues/5774
### Apache NetBeans version
Apache NetBeans 17
### What happened
Please find attached two minimum reproducible examples. One uses **maven**
and the other one uses **ant**.
When creating a BeanInfo using netbeans, in the getBdescriptor() method, we
can set the value "containerDelegate" using the following line of code to
delegate to another container.
```java
beanDescriptor.setValue("containerDelegate", "getInnerPanel");
```
These examples work with all previous JDK versions, except for JDK 19
I also tested JDK 13, 14, 15, 16, 17 and 18 and they all work fine.
[DummyAnt.zip](https://github.com/apache/netbeans/files/11152746/DummyAnt.zip)
[DummyMaven.zip](https://github.com/apache/netbeans/files/11152747/DummyMaven.zip)
### How to reproduce
Using the Dummy Projects.
With any new JPanel, or using MainPanel:
- Drag or add a SectionPanel instance to MainPanel
- Then add any other widget (i.e. JLabel) from the palette in the
SectionPanel instance
SectionPanel should be recognized as a Container, therefore the widget
should get added into the SectionPanel instance
### Did this work correctly in an earlier version?
Apache NetBeans 16
### Operating System
Windows 11
### JDK
19.0.2
### Apache NetBeans packaging
Apache NetBeans platform
### Anything else
- This problem occurs all the time under the aforementioned description
- **Here's a screenshot of how this example should look**
- And here's the Navigator screenshot showing that it works as expected
- **Here's a screenshot after attempting to perform the same steps using
JDK19**
- Here's the Navigator screenshot showing that a widget cannot be added to
the SectionPanel instance
### Are you willing to submit a pull request?
No
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