The ICU4C problem reported by ticket is also reproduced with ICU4J. ICU4J does not have the equivalent failing test case. With the equivalent test case, ICU4J implementation still did not fail, because of the internal formatter cache. However, when changing the order of test case data, the exact same issue is reproduced.
A message from Kenchan in icu-support ML :
Milestone 4.1.2 deleted