Border gap around deepin terminal when I push the window sideways.

[prosenjitjoy]

When I use two different window by pushing one window int the left side and one in the right side for efficient display use, I noticed that deepin terminal act differently. It doesn't allow me fully used the assign window size. It shows invisible border. See the pictures from imgur. Picture 1 Picture 2

Is there any way to fix this.

N.B. - sorry for my bad English.