mmm, frustrating. OK will get back to you when I can. Also, do you know if this affects all XS based objects or just SAPUI5 ones? We have some XSJS scripts that are used in a production environment and would not want us to cause an issue by deploying a bug fix and causing production functionality to fall over. They are applied to production via delivery units if that makes a difference.
Thanks for your help so far.
Jon