I'm not sure if it's a conflict with Drift and Shadowed Unit Frames or Shadowed Unit Frames causing the problem. When Shadowed Unite frames is enabled, I cannot single click any NPC or PC. If I try to right click to turn my camera angle, it uses the resize option to resize my player frame.

Interesting, there might be some hidden frames receiving clicks. I'll need to investigate further.

I have the same problem

I could find out that the bug with shadowunitframes is related to the scale option. If you remove the scaling at drift everything works without problems.

There was a bug on the Drift side where it was mistakenly trying to scale the SUFWrapperFrame. I fixed this issue in Drift v2.2.0.