Because I don't test playthroughs with the catalog mods. There are too many variations for one person to do that, so the public is more responsible in the testing by reporting their playthrough experiences. I simply take what is released by others and only test the download, activate, configure and launch process, then load up a save and check the debug to make sure its injected into the game.
The Stat changes have largely been reported, and the quick solution is to do as Paladin says until the next catalog update fixes (hopefully) the issue.