`IndexError` when loading data from currently running MCMC

[michaelosthege]

In Run.to_inferencedata() one can run into this error 👇

    idata = run.to_inferencedata()
  File "C:\Users\osthege\AppData\Local\Continuum\miniconda3\envs\pfpm\lib\site-packages\mcbackend\core.py", line 204, in to_inferencedata
    warmup_posterior[var.name].append(draws[tune])
IndexError: boolean index did not match indexed array along dimension 0; dimension is 9890 but corresponding boolean dimension is 9886