Is this the dupe glitch?
It does looks like it! Did you not get the "dupe detected" and crosshair overlay when it happened?
I don't recall seeing it. This wasn't in the dupe debug build though, it was build 6
I would assume the message and overlay are part of the debug build then. There's likely some other debugging info on the save that's unique to this build too, so I don't know how useful your save may be to MrDrNose.
Is this the dupe glitch?