在官方的 2D-UI-input组件demo库中写了如下的代码即可复现此问题

let 
SPACING = 100,
INPUT_WIDTH = 300,
INPUT_HEIGHT = 50,
Y_OFFSET = 50,
skins,
box = null;
 
class UI_Input {
constructor() {
const 
Browser = Laya.Browser,
WebGL = Laya.WebGL,
Stage = Laya.Stage,
Stat = Laya.Stat,
Handler = Laya.Handler;

// 不支持WebGL时自动切换至Canvas

Laya.init(800, 600, WebGL);
 
Laya.stage.alignV = Stage.ALIGN_MIDDLE;
Laya.stage.alignH = Stage.ALIGN_CENTER;
 
Laya.stage.scaleMode = Stage.SCALE_SHOWALL;
Laya.stage.bgColor = "#232628";
 
Stat.show();
skins = ["res/ui/input (1).png", "res/ui/input (2).png", "res/ui/input (3).png", "res/ui/input (4).png"]
Laya.loader.load(skins, Handler.create(this, this.onLoadComplete));
box = new Laya.Box();
Laya.stage.addChild(box);
}
 
onLoadComplete() {
for (let i = 0, len = skins.length; i < len; ++i) {
var input = this.createInput(skins[i]);
box.addChild(input);
input.prompt = 'Type:';
input.x = (Laya.stage.width - input.width) / 2;
input.y = i * SPACING + Y_OFFSET;
}
 
this.createInput();
}
 
createInput(skin) {
const TextInput = Laya.TextInput;
 
var ti = new TextInput();
    if(skin){
        ti.skin = skin;
     ti.size(300, 50);
     ti.sizeGrid = "0,40,0,40";
     ti.font = "Arial";
     ti.fontSize = 30;
     ti.bold = true;
     ti.color = "#606368";
    }else{
        ti.size(300, 50);
        ti.skin = "res/ui/input (1).png";
     ti.sizeGrid = "0,40,0,40";
     ti.font = "Arial";
     ti.fontSize = 30;
     ti.bold = true;
     ti.color = "#606368";
        
            ti.on(Laya.Event.CHANGE, null, () => {
                // this.destroyAll();
                console.log('22222');
            })
            ti.on(Laya.Event.INPUT, null, () => {
                console.log('111111');
                this.destroyAllInput();
            })
            
     Laya.stage.addChild(ti);
    }
 
return ti;
}
 
destroyAllInput(){
    box.destroyChildren();
}
}
 
new UI_Input();