I a running TW on a CentOS 6.8
2.6.32-042stab120.5 #1 SMP Tue Oct 25 22:31:12 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux
with
yum-cron.noarch 3.2.29-75.el6.centos @updates

On March 21 there was following automatic update:

#==============================================================
Package Arch Version Repository Size
#==============================================================
Updating:
tripwire x86_64 2.4.3.3-1.el6 epel 1.4 M

Ever since this update the Object summary printed after a --check is empty (modified, added, or removed files are not listed any more). The number of violations is correct and the report file shows the violating files. The cfg and pol files have not changed, although there are new versions of the txt files present.

...
Total objects scanned: 41435
Total violations found: 39

#===========================================================
Object Summary:
#===========================================================

#-------------------------------------------------------------------------------
Section: Unix File System
#-------------------------------------------------------------------------------

#-------------------------------------------------------------------------------
Rule Name: Root config files (/root)
Severity Level: 100
#-------------------------------------------------------------------------------

#===========================================================
Error Report:
#===========================================================

No Errors

#-------------------------------------------------------------------------------