PSA: Qwen3.6 ships with preserve_thinking. Make sure you have it on.

Qwen3.6 adds a preserve_thinking flag to keep prior reasoning in context and address the KV cache invalidation issue seen with the Qwen3.5 template. The post cites the Qwen3.6-35B-A3B model page and gives a two-turn 20-digit-number test: with preserve_thinking on, the model can return the second number from its earlier reasoning. The practical point is cross-turn reasoning retention for agent and tool workflows; LM Studio does not support it yet, and an oMLX PR is open.

Why it matters: HKR-H, K, and R all pass: the story has a strong hidden-setting hook, a concrete two-turn repro, and a clear nerve for local-model and agent users. I keep it in the low 70s because this is a Reddit PSA rather than a primary release note, and the impact is concentrated in Qwen/OSS