Are you a new user and you’ve just installed Deepin? Then you must be aware that Deepin V.20 very recently hit the Arch repo.
This version hasn’t reached maturity completely since the Deepin devs went in another direction with the DE.
The DE is receiving updates regularly but a lot of basic features work partially or not at all. These bugs are usually temporary and will be fixed over time.
We don’t have control over these bugs and we can’t hold the updates back since this is the nature of a rolling release distro.
At this moment we recommend to have Deepin installed next to another DE, as a secondary option.