Continuing similar issue fixing for KDE, it is now apparent that LibreOffice looks also "ugly" on Deepin 20 and later. This means its visual appears ancient unlike what users expect and look unmatched with the Deepin desktop themes. To solve this issue, follow these instructions.

Subscribe to UbuntuBuzz Telegram Channel to get article updates.

Before

When you get a Deepin 20 computer, you are happy it is equipped with LibreOffice 6 but perhaps not happy with the ancient looking (Windows 95-like) user interface that not following Deepin look and feel. See below.

After

Once you did the fix, its user interface comes back to normal and it matches Deepin look and feel. See below.

Fix 

1) Open Deepin Terminal.

2) Type command line below then press Enter.

$ sudo apt-get install libreoffice-gnome 

3) The required packages will be installed.

4) Close all running LibreOffice and run it once again.

5) Now LibreOffice looks good.

Good luck!