Thanks for your answer.
Unfortunately, it was already the case:
root@ns3117200:~# cd /home/
root@ns3117200:/home# ll
total 40
drwxr-xr-x 7 root root 4096 Jun 9 07:10 ./
drwxr-xr-x 24 root root 4096 Jun 9 07:26 …/
drwxr-xr-x 4 root root 4096 Jun 9 07:00 back/
drwx------ 2 root root 16384 May 11 09:58 lost+found/
drwxr-xr-x 2 netdata netdata 4096 Jun 9 07:10 netdata/
drwxr-xr-x 32 root root 4096 Jun 3 14:02 netdata_source/
root@ns3117200:/home# chmod o+x .
root@ns3117200:/home# ll
total 40
drwxr-xr-x 7 root root 4096 Jun 9 07:10 ./
drwxr-xr-x 24 root root 4096 Jun 9 07:26 …/
drwxr-xr-x 4 root root 4096 Jun 9 07:00 back/
drwx------ 2 root root 16384 May 11 09:58 lost+found/
drwxr-xr-x 2 netdata netdata 4096 Jun 9 07:10 netdata/
drwxr-xr-x 32 root root 4096 Jun 3 14:02 netdata_source/
Any other idea?