spotify 4k屏幕下默认窗口太小，修改 Exec 开头那行下的参数可以解决。

--force-device-scale-factor=1.5 # 根据具体显示器调整数值参数，这里是 1.5

文件
 ~/Desktop/com.spotify.www.desktop 
内容

[Desktop Entry]
X-Deepin-CreatedBy=com.deepin.dde.daemon.Launcher
X-Deepin-AppID=com.spotify.www
Categories=Audio
Comment=Spotify streaming music client.
Exec="/opt/apps/com.spotify.www/files/spotify/spotify --force-device-scale-factor=1.5 %U"   
Icon=/opt/apps/com.spotify.www/entries/icons/spotify-linux-512.png
Name=Spotify
Name=Spotify
Type=Application
X-Deepin-Vendor=user-custom