Primefaces自动完成下拉菜单逐渐消失，点击滚动条

Question

Primefaces自动完成下拉消失，点击滚动条后消失

要获得此功能，请使用scrollHeight = "300"

                    <p:autoComplete
                            id="other-tax-payer-country"
                            class="form-input custom-autocomplete"
                            queryDelay="300"
                            value="#{cabinetFormView.tmpTaxCountry}"
                            completeMethod="#{cabinetFormView.getTaxCountriesList}"
                            forceSelection="true"
                            var="t" itemValue="#{t}" itemLabel="#{t}"
                            onclick="PF('dlg2').search('')" widgetVar="dlg2"
                            converter="countryDtoConverter" scrollHeight = "300">
                            <p:column>
                                <h:outputText value="#{t}" />
                            </p:column>
                        <f:ajax onevent="validateTaxPayerFields" event="itemSelect" listener="#{cabinetFormView.addTaxCountry}"/>
</p:autoComplete>