Strange behavior with a JavaFX Project

### Apache NetBeans version

Apache NetBeans 17

### What happened

I started a Java Ant project, and then needed to use JavaFX, so I created a JavaFX project and copied all my classes over to the new project. If I run the program, then make a CSS change in another class, I'll refer to it as ClassA, the CSS change will not take effect when I run the program again. If I make a change to a different class, ClassB, and then run the program, the changes will take effect.

I did find a broken reference in Project Properties -> Libraries -> Run. I haven't been able to figure out how to resolve that or if it's causing my problem.


### How to reproduce

_No response_

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Windows 11

### JDK

Zulu JDK 20.28.85 Windows x64

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

_No response_

### Are you willing to submit a pull request?

No

Start by reproducing the JavaFX project behavior on Windows with the reported JDK, changing ClassA's CSS and then ClassB before rerunning. Inspect Project Properties > Libraries > Run, including the reported broken reference, and determine whether the issue is resolved when CSS changes consistently take effect after a run.

Written by the indexing model from the issue text.