Fix randomness for threading

Signed-off-by: marcus.wirtz <[email protected]>

monai/transforms/compose.py

@@ -107,7 +107,11 @@ def execute_compose(
 
     for _transform in transforms[start:end]:
         if threading:
-            _transform = deepcopy(_transform) if isinstance(_transform, ThreadUnsafe) else _transform
+            if isinstance(_transform, ThreadUnsafe):
+                if isinstance(_transform, Randomizable):
+                    # update the random state before deepcopy, otherwise there is no randomness
+                    _transform.set_random_state()
+                _transform = deepcopy(_transform)
         data = apply_transform(
             _transform, data, map_items, unpack_items, lazy=lazy, overrides=overrides, log_stats=log_stats
         )