I'm not using this format and there are no tests for it, so have no idea what the issue is. It is however strange that upgrading to a minor new version of PHP would cause it to break. I suggest you file a bug report on Bugzilla  with a description of the issue, how it can be reproduced, the versions of the software you are using, etc.
Jeroen De Dauwhttp://www.bn2vs.com
Don't panic. Don't be evil. ~=[,,_,,]:3