Fix: get_logprobs of base env (reason why TB was not training well) #251
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The clone of
policy_outputsintologitsinget_logprobs()of the base environment was incorrectly detached, preventing the correct propagation of gradients.Sanity checks seem fine now: https://wandb.ai/alexhg/gfn_sanity_checks
This was the commit to blame: 67a8bc3