You are right, very weird. It worked when I printed it: https://i.imgur.com/U9X3vzw.png, and 120 seems to work. But for some reason 125 doesn't want to slice. Must be some update in the later Bambu Studio versions, I printed it during 1.7 iirc and then everything sliced and printed correctly. I will have a look at the settings, maybe I can tweek them and find that missing 2.

While inspecting it, the 2 is there, its just hidden under layer 1 for some reason. Have no idea why its doing that. Ill keep looking.

Fixed it now, what a weird bug. The 125 negative angle did not have the same problem. Fixed it by just splitting the model and reassembling it, so it looks a bit weird in the object list but at least its possible to print with the latest version of Studio. Thanks for giving me a heads up so I could fix the issue instead of just rating it a 1* and explaining what's wrong!