It's not possible to always disable JCheckBox animation by default

[jordeu]

Due to this lines in WebCheckBoxUI:

protected boolean isAnimatedByDefault ()
    {
        // Workaround for Jide tristate checkbox
        return !ReflectUtils.containsInClassOrSuperclassName ( checkBox.getClass (), "com.jidesoft.swing.TristateCheckBox" );
    }

the constant

WebCheckBoxStyle.animated = false;

is always ignored.

[mgarin]

Thanks for reporting!
I have merged your pull, that fix will be included in v1.27 release.