Chat-template fix restores reasoning in a visual agent environment
mervenoyann · x · 2026-07-27
The author says they fixed a chat-template bug in their environment, after which reasoning started working again. They currently feed only instructions plus 9 past frames per iteration, want to run ablations on the number of frames, and plan to move on to fine-tuning. The quoted context adds that they chose a Unity-based visual push-block environment, found the model tends to go straight and get stuck without training or prompt tweaks, and enjoyed the OpenEnv workflow enough to continue experimenting with GEPA and TRL.
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