I called it a bugfix on 0.2.0.10-alpha, since git commit e5885deab is where we introduced anonymized begin_dir connections.
@@ -0,0 +1,6 @@
+ o Major bugfixes:
+ - Fix an edge case where if we fetch or publish a hidden service
+ descriptor, we might build a 4-hop circuit and then use that circuit
+ for exiting afterwards -- even if the new last hop doesn't obey our
+ ExitNodes config option. Fixes bug 5283; bugfix on 0.2.0.10-alpha.
+
Roger Dingledine