Session deadlocks (never completes, no error) when an `If` node’s branch input comes from a chain containing an `Iterate` node

该死锁发生在 InvokeAI 工作流中,当 If 节点的分支输入( true_input / false_input )来自包含 Iterate 节点的上游链时,会话会永久卡住且不报错。优先排查是否在 If 分支输入路径中混用了 Iterate 节点。






![[Bug]: Current main Docker compose fails to start with v0.25.6 image](https://www.chat-gpts.plus/wp-content/uploads/2026/08/15692-ba3ab69e-768x403.jpg)

![[Bug]: Dataflow pipeline crashes with KeyError: 'path' when stored DSL lacks the path key](https://www.chat-gpts.plus/wp-content/uploads/2026/08/18746-a051003b-768x403.jpg)