When INSTALL was called using sudo with /opt/tools/wrappers in the beginning of PATH it was found that /var/tmp was being used.
After these questions:
Execution directory? /opt/pbs/22.214.171.124875
PBS needs to have a private directory (referred to as 'PBS_HOME'
in the documentation) where it can permanently store information.
Please enter the full path for the PBS_HOME location you would like
or press enter to accept the default.
Home directory? /var/spool/PBS
we see that the following commands are being used, for example in 13.0.2:
chmod 644 /var/tmp/pbs.conf.126.96.36.199875.2308
mkdir -m 0700 /var/tmp/PBS_licensing_dir
The issue was traced back to 188.8.131.52941. Previous builds did not seem to have this issue.