Problems setting text on a label

Question

today I have a problem to configure a text in a JLabel using a JButton.

When I do that the JPanel components disappear along with the JPanel

Below I show a gif of what happens

https://i.gyazo.com/b57c0e7617e365d8d47727f1dfb5deaf.gif

This is the code of the change button

public void buttonChangeLastname(){
    if(!varModeUser.jtxtLastname.isEnabled()){
        this.varModeUser.jtxtLastname.setEnabled(true);
        if(CreateFile.getInstance().getLanguaje().equalsIgnoreCase("ES")){
            this.varModeUser.jlAttention1.setText("Atención: Modo de cambio activado, para desactivarlo haga click de nuevo en el botón.");
        }else if(CreateFile.getInstance().getLanguaje().equalsIgnoreCase("EN")){
            this.varModeUser.jlAttention1.setText("Attention: Edit mode activated, to deactivate it, click the button again.");
        }
    }else{
        this.varModeUser.jtxtLastname.setEnabled(false);
    }
}

Help me please, I don't have idea how to continue :(

Sorry for my english, it's basic

Sorry, it's almost impossible to understand from your gif what's going wrong. — Nowhere Man, Apr 24 '20 at 19:27
It seems you need to read this [article](https://stackoverflow.com/questions/25385173/what-is-a-debugger-and-how-can-it-help-me-diagnose-problems) — Nowhere Man, Apr 24 '20 at 19:29
For better help sooner, [edit] to add a [MCVE] or [Short, Self Contained, Correct Example](http://www.sscce.org/). — Andrew Thompson, Apr 24 '20 at 19:30
Maybe you try to set a text in the label which is too long and thus the container's layout is corrupted but it's just a guess. — Nowhere Man, Apr 24 '20 at 19:32
Pressing the change button, this should activate the JText and place a text in a JLabel that is above the button, but what it does is return the JPanel to its original location, as seen in the gif — Luis Alva Celis, Apr 24 '20 at 19:37

Problems setting text on a label

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