I still get weird, occasional focus issues with my Baby Rollei. Note the soft areas in this photo, and the sharp areas. I would suspect the film might be too wide and has buckled within the film rails, but this has happened before with regular factory-made 127. In fact, I think there is a more generous tolerance for differing film widths within the camera, than there is in my Nikor 127 processing reel. Too wide bunches up the film where the spirals are attached, while too narrow and the film falls off the spirals. The + and - tolerance is very small.
Nikon S2, S3, F, F2, F3, FM2, FA, N90S, D80, D7000, D750, Sony a6000, Canon IIf, Leica CL, Tower type 3, Zorki 4, Vito B, Perkeo II, Rollei 35....