Config changes causes warning of writable files in logs

When making configuration changes to postfix, the following error messages are generated in the mail log:

Jul 22 08:57:25 kula-dev postfix/qmgr[30213]: 40C6C4051E: removed
Jul 22 08:57:41 kula-dev postfix/postfix-script[30343]: warning: group or other writable: /usr/lib/postfix/./sbin/lmtp
Jul 22 08:57:41 kula-dev postfix/postfix-script[30344]: warning: group or other writable: /usr/lib/postfix/./libpostfix-dns.so.1
Jul 22 08:57:41 kula-dev postfix/postfix-script[30345]: warning: group or other writable: /usr/lib/postfix/./libpostfix-util.so.1
Jul 22 08:57:41 kula-dev postfix/postfix-script[30346]: warning: group or other writable: /usr/lib/postfix/./libpostfix-tls.so.1
Jul 22 08:57:41 kula-dev postfix/postfix-script[30347]: warning: group or other writable: /usr/lib/postfix/./libpostfix-global.so.1
Jul 22 08:57:41 kula-dev postfix/postfix-script[30348]: warning: group or other writable: /usr/lib/postfix/./libpostfix-master.so.1
Jul 22 08:57:41 kula-dev postfix/postfix-script[30349]: warning: group or other writable: /usr/lib/postfix/sbin/./lmtp

These are symbolic links, which link to files that are properly permissioned:

lrwxrwxrwx 1 root root 23 Apr 13 2016 libpostfix-dns.so.1 -> libpostfix-dns.so.1.0.1
-rw-r--r-- 1 root root 26968 Apr 13 2016 libpostfix-dns.so.1.0.1
lrwxrwxrwx 1 root root 26 Apr 13 2016 libpostfix-global.so.1 -> libpostfix-global.so.1.0.1
-rw-r--r-- 1 root root 281152 Apr 13 2016 libpostfix-global.so.1.0.1
lrwxrwxrwx 1 root root 26 Apr 13 2016 libpostfix-master.so.1 -> libpostfix-master.so.1.0.1
-rw-r--r-- 1 root root 39472 Apr 13 2016 libpostfix-master.so.1.0.1
lrwxrwxrwx 1 root root 23 Apr 13 2016 libpostfix-tls.so.1 -> libpostfix-tls.so.1.0.1
-rw-r--r-- 1 root root 103344 Apr 13 2016 libpostfix-tls.so.1.0.1
lrwxrwxrwx 1 root root 24 Apr 13 2016 libpostfix-util.so.1 -> libpostfix-util.so.1.0.1
-rw-r--r-- 1 root root 264504 Apr 13 2016 libpostfix-util.so.1.0.1
-rwxr-xr-x 1 root root 13052 Apr 13 2016 postfix_groups.pl
-rw-r--r-- 1 root root 14504 Apr 13 2016 postfix-sqlite.so.1.0.1
drwxr-xr-x 2 root root 4096 Jul 22 08:55 sbin

I've read on the Internet it is a known issue in this version of postfix. Wondering if there will be an update to this problem in the 3.1.0-3 Ubuntu:16.04/xenial package.

http://postfix.1071664.n5.nabble.com/Warning-group-or-other-writeable-td87817.html
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832576