Hi Ali Kholmatov,
Greetings from Syncfusion support.
We have checked the reported issue at our end, but we are unable reproduce reported issue at your end. We have bundled the toolbar and tree view in production mode, the file size is 434 kb only, please refer the below image
Please share below details to provide better solution at the earliest.
1. Could please share which command you to use for analyzing bundle,
2. You get this size in production mode or development mode