KS 9.0.289, Windows 10, Nvidia Quadro P2000 (driver version 436.30).
I have a custom Workspace that has project tabs on my second monitor and whenever I open KeyShot, the windows are not in the correct positions. Even if I move them to the correct positions and pick Apply Changes, the next time I open KeyShot they have reverted to the wrong places. I have even tried creating a brand new Workspace but that did not solve the problem either. All of my Workspaces that are on the main screen only are fine, it is just the ones that use the second monitor that have issues (I don't believe I saw this during the beta).