Thanh Chuong , thanks for the report - I have not been able to reproduce this myself. Please kindly send us a Feedback report with your logs and we'll have a closer look at this behaviour. Also, does it help at all if you reset your Visual Settings to default entirely?
This version is in preview so it's normal to have some bugs....
I have to use lower version (Enscape-3.2.0-preview.2+53376).
It works properly with Enscape-3.2.0-preview.2+53376