The text CSS parser fails with -fx-font-size values that don't have a suffix. The resulting Size is Infinity.

        def text = Text {
            content: "Hello"
            style: "-fx-font-size: 24"
        }
        scene.stylesheets = "{__DIR__}FontTest.css";
        scene.content = text;
        fireTestPulse();
        assertEquals(Font.font("Amble Cn", null, null, 24), text.font);

(This is from the FontsTest.css file)