JavaFX 8 TableView custom cells losses CSS

When using a table view the first rendering of a customized table cell seems to be ok, but once we start scrolling up and down styling seems to be loosing:
/*
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 */
package mx.gob.scjn.iusjfx.presentacion.utils;

import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.Tooltip;
import javafx.util.Callback;
import mx.gob.scjn.ius_common.TO.TesisTO;

/**
 *
 * @author charly
 */
public class TesisTC implements Callback<TableColumn, TableCell> {

    public List<TesisTO> tesisActuales = null;
    private static double alto;

    @Override
    public TableCell call(final TableColumn param) {
        final TableCell cell = new TableCell() {
            
            @Override
            public void updateItem(Object item, boolean empty) {
                super.updateItem(item, empty);
                if (getIndex() < tesisActuales.size() && getIndex()>=0) {
                    final TesisTO tesis = tesisActuales.get(getIndex());
                    setText((String) item);
                    if (item == null) {
                        return;
                    }
                    final int largo = getText().length() > 200 ? 200 : getText().length();
                    //if (getTooltip() == null || getTooltip().getText().length() != largo) {
                    setTooltip(new Tooltip(getText().substring(0, largo)));
                    getTooltip().setMaxWidth(200);
                    getTooltip().setPrefWidth(200);
// getTooltip().setMaxHeight(200);
// getTooltip().setPrefHeight(200);
                    getTooltip().setStyle("-fx-wrap-text: true;");
                    //}
                    if (tesis.getTa_tj() == 1) {
                        getStyleClass().add("jurisTabla");
                    } else {
                        getStyleClass().add("taTabla");
                    }
                    if (alto == 0) {
                        alto = PresentacionConstantes.MIN_ALTO_TABLAS;
                    }
                    this.setHeight(alto);
                    this.setMinHeight(alto);
                    this.setMaxHeight(alto);
                    this.setPrefHeight(alto);
                }
            }
        };
        return cell;
    }

    public void setTesisActuales(List<TesisTO> value) {
        tesisActuales = value;
    }

    public void setAlto(double value) {
        alto = value;
    }

    public double getAlto() {
        return alto;
    }
}

On the CSS:

.jurisTabla{
    -fx-font-weight: bold;
    -fx-wrap-text: true;
}
.taTabla{
    -fx-font-weight: normal;
    -fx-wrap-text: true;
}