CLONE - Getting java.lang.StackOverflowError in org.infinispan.transaction.xa.TransactionXaAdapter.toString(TransactionXaAdapter.java:215)

Hi,
I am getting a StackOverFlowError when I call remote EJB's that return an exception. The EJBs are running in Weblogic configured to use the LLR XA transaction optimization. We are currently using version 5.0.1-FINAL. I have tried the latest 5.1.5-FINAL version and the problem still occurs.

The top of the stacktrace is:

javax.ejb.EJBException: EJB encountered System Exception: : java.lang.StackOverflowError
at java.lang.Integer.toUnsignedString(Integer.java:245)
at java.lang.Integer.toHexString(Integer.java:174)
at weblogic.transaction.internal.XAResourceHelper.xidToString(XAResourceHelper.java:26)
at weblogic.transaction.internal.XAResourceHelper.xidToString(XAResourceHelper.java:21)
at weblogic.transaction.internal.XidImpl.toString(XidImpl.java:151)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuffer.append(StringBuffer.java:219)
at weblogic.transaction.internal.TransactionImpl.toString(TransactionImpl.java:965)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.LocalTransaction.toString(LocalTransaction.java:159)
at org.infinispan.transaction.xa.LocalXaTransaction.toString(LocalXaTransaction.java:66)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.xa.TransactionXaAdapter.toString(TransactionXaAdapter.java:214)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuffer.append(StringBuffer.java:219)
at weblogic.transaction.internal.XAServerResourceInfo.toString(XAServerResourceInfo.java:151)
at weblogic.transaction.internal.TransactionImpl.toString(TransactionImpl.java:985)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.LocalTransaction.toString(LocalTransaction.java:159)
at org.infinispan.transaction.xa.LocalXaTransaction.toString(LocalXaTransaction.java:66)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.xa.TransactionXaAdapter.toString(TransactionXaAdapter.java:214)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuffer.append(StringBuffer.java:219)
at weblogic.transaction.internal.XAServerResourceInfo.toString(XAServerResourceInfo.java:151)
at weblogic.transaction.internal.TransactionImpl.toString(TransactionImpl.java:985)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.LocalTransaction.toString(LocalTransaction.java:159)
at org.infinispan.transaction.xa.LocalXaTransaction.toString(LocalXaTransaction.java:66)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at org.infinispan.transaction.xa.TransactionXaAdapter.toString(TransactionXaAdapter.java:214)