Passive Skill Tree Reset

The game reset most of my passive skill tree. I logged on today and noticed I had no skills equipped, when I opened my inventory, my gear was highlighted red, and the Passive tab had a 45 next to it. I open it, and see I have 45 skill points, and most of my passives have been reset. I spent 50+ hours handcrafting my build, I don't remember all the skills I got, this is super frustrating.