Fix case of ExecutionBlocker not handled correctly with INPUT_IS_LIST.

execution.py

@@ -144,11 +144,16 @@ def slice_dict(d, i):
         return {k: v[i if len(v) > i else -1] for k, v in d.items()}
 
     results = []
-    def process_inputs(inputs, index=None):
+    def process_inputs(inputs, index=None, input_is_list=False):
         if allow_interrupt:
             nodes.before_node_execution()
         execution_block = None
         for k, v in inputs.items():
+            if input_is_list:
+                for e in v:
+                    if isinstance(e, ExecutionBlocker):
+                        v = e
+                        break
             if isinstance(v, ExecutionBlocker):
                 execution_block = execution_block_cb(v) if execution_block_cb else v
                 break
@@ -160,7 +165,7 @@ def process_inputs(inputs, index=None):
             results.append(execution_block)
 
     if input_is_list:
-        process_inputs(input_data_all, 0)
+        process_inputs(input_data_all, 0, input_is_list=input_is_list)
     elif max_len_input == 0:
         process_inputs({})
     else: