Prevx would most likely catch any new files from new programs it's a very common occurrence just as NOD32 use to flag any new build of Prevx and most other AV's do the same! TH
Yes indeed These files were flagged because of maximum heuristic settings which literally means to warn on anything which is of a "young" age and not trusted. If users run into false positives because of their browsing/downloading habits with these settings, we strongly recommend that they turn down the settings because the detections are intentional and not true false positives.