Menu entries appear twice on Deepin Linux

[probonopd]

This does not happen on other distributions (e.g., Xubuntu 18.04 Live ISO).

This is on Deepin Linux 20:

cc @shouhuanxiaoji

[probonopd]

This is probably because sda1 is mounted twice: at /run/live/findiso and at /usr/lib/live/mount/findiso.

me@host:~$ mount | grep sda1
/dev/sda1 on /run/live/findiso type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
/dev/sda1 on /usr/lib/live/mount/findiso type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)

me@host:~$ cat /etc/os-release 
PRETTY_NAME="Deepin 20 Beta"
NAME="Deepin"
VERSION_ID="20 Beta"
VERSION="20 Beta"
ID=Deepin
HOME_URL="https://www.deepin.com/"
BUG_REPORT_URL="https://bbs.deepin.org/"

Probably this should be solved in Deepin Linux.