Sorry to ruin the voyeuristic fun, but we issued a fix on our testlive patch that aims to fix the exhibitionist tendencies of Purge NPCs!
The Purge should now happen more reliably and Purge enemies should no longer be naked. The Purge meter should fill as intended. You should also reliably be able to knock out NPCs and not halt the Purge in its tracks.
You can also see what other changes are included in our patch thread
