Hi Tomasz,
Sorry for the inconvenienced caused.
We have analyzed your sample and found that TreeGrid styles was missed to refer in the sample. We have also logged UG documentation correction task. It will be refresh in our live URL within two weeks. Please refer following code snippet to resolve the reported issue.
[App.vue]
<style>
//...
@import '../node_modules/@syncfusion/ej2-treegrid/styles/bootstrap4.css';
</style> |
Please find the below sample link.
Please get back to us if you require further assistance on this.
Regards,
Pooja Priya K