letsencrypt symlinks are not updated after renewal

short description

SSL/Letsencrypt enabled site does not update symlinks after letsencrypt renewal. Certifcate got renewed 30 days before expiration as expected, but ispconfig site symlinks in ssl/ folder still point to the previous certificate, e.g. chain1.pem instead of the new chain2.pem. Like this:

# ls -l /var/www/www.example.com/ssl/
total 24
lrwxrwxrwx 1 root root   73 May 23 11:10 www.example.com-le.bundle -> ../../../../../../etc/letsencrypt/archive/www.example.com/chain1.pem

[...] Also note the usage of archive/ instead of live/ folder above The following link: https://www.howtoforge.com/community/threads/lets-encrypt-certificates-not-auto-renewed-symlink-archive-vs-live.75338/ suggests that live/ should be used here instead?!

correct behaviour

Symlinks should be updated to point to the new cert files, e.g. chain2.pem ...or probably use live/ folder instead?

environment

Server OS: centos Server OS version: centos7.5 ISPConfig version: 3.1.11 (with nginx)

workaround

[ ] disable and [x] re-enable letsenrcrypt for site to get symlink updated to point to the new cert, though still in archive/ folder.