Its not a bug, cause in the actual game players your fraction are hostile too, they can choose to be friendly but its never an answer. So i guess spt aki devs decided to make them hostile. But as i remember you can wiggle wiggle and they might team with ya
The value that sets the percentage of hostile PMC was present even in earlier builds. And it was possible to set the percent of PMC of your own faction that is hostile to you. And it worked as a charm in prior builds.
Since 3.1.1. this setting is not working. That is why I hope this will be recognized as a bug and will be fixed someday. Or, at least devs will take a glance at this issue, as it worked in previous builds of SPT.