We recently upgraded from #PyTorch 1.8.1 to 2.0.0 and all of a sudden our ONNX exports for one model seem to be broken, we get too many unspecific dimensions if we set dynamic_axes at all on the outputs (i.e. for the batch size)
I have a terrible feeling that this is some kind of change in the tracing JIT, but haven't been able to find a tidy reproducer yet.