fix bug

Author: nimarb

langfuse/_client/client.py

@@ -1660,7 +1660,12 @@ def update_current_trace(
         current_otel_span = self._get_current_otel_span()
 
         if current_otel_span is not None:
-            span = LangfuseSpan(
+            existing_observation_type = current_otel_span.attributes.get(
+                LangfuseOtelSpanAttributes.OBSERVATION_TYPE, "span"
+            )
+            # We need to preserve the class to keep the corret observation type
+            span_class = self._get_span_class(existing_observation_type)
+            span = span_class(
                 otel_span=current_otel_span,
                 langfuse_client=self,
                 environment=self._environment,

tests/test_core_sdk.py

@@ -1931,7 +1931,6 @@ def test_start_as_current_observation_types():
         assert len(observations) == 1, f"Expected one {obs_type.upper()} observation"
 
 
-@pytest.mark.skip(reason="Works after OSS release 3.102")
 def test_that_generation_like_properties_are_actually_created():
     """Test that generation-like observation types properly support generation properties."""
     from langfuse._client.constants import (