HarmonyOS 鸿蒙Next嵌套Navigation出现bug

当我使用嵌套Navigation时，从第一个页面跳到下面这个页面，这里嵌套了一层Navigation，在当前页面第一次进来时，自定义title生效，但是当我切换toolbar时，自定义title 就消失了，再怎么切换也无效，下面是第二个页面代码

import {Page1 } from ‘./Page1’
import {Page2 } from ‘./Page2’

@Builder
function Tabbar2IndexBuilder(name: string, param: Object) {
Tabbar2Index()
}
@Component
struct Tabbar2Index {
@State currentPage: string = ‘Page1’
pageStack: NavPathStack = new NavPathStack()
build() {
NavDestination() {
RelativeContainer() {
Navigation(this.pageStack) {
Column() {
Text(‘tabbar2’)
if (this.currentPage == ‘Page1’) {
Page1()
} else if (this.currentPage == ‘Page2’) {
Page2()
}
}.width(‘100%’)
}
.title({ builder: this.myNavTitle, height: TitleHeight.MainOnly })
.titleMode(NavigationTitleMode.Mini)
.hideBackButton(true)
.toolbarConfiguration([
{
value: ‘Page1’,
icon: $r(‘app.media.foreground’),
activeIcon: $r(‘app.media.app_icon’),
status: this.currentPage == ‘Page1’ ? ToolbarItemStatus.ACTIVE : ToolbarItemStatus.NORMAL,
action: () => {
this.currentPage = ‘Page1’
}
},
{
value: ‘Page2’,
icon: $r(‘app.media.foreground’),
activeIcon: $r(‘app.media.app_icon’),
status: this.currentPage == ‘Page2’ ? ToolbarItemStatus.ACTIVE : ToolbarItemStatus.NORMAL,
action: () => {
this.currentPage = ‘Page2’
}
}
])
}
.height(‘100%’)
.width(‘100%’)
}.hideTitleBar(true)
}
@Builder
myNavTitle() {
Row() {
Text(‘首页’)
}.backgroundColor(Color.Pink).width(‘100%’).height(‘100%’).padding({ left: 15 })
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

下面是第一次进入图片

切换后图片