Thanks Justin!!
yes you are right, this is definitely a bug and needs to be addressed. I cant even take the approach which Raj mentioned because I was talking to my client and he clearly we should not workaround a bug and since we've around 10 exclude on a single field. Hence creating 10 different restricted measure and creating a Calculated column will be costly in terms of maintenance as well as performance as well.
Lets see what SAP has to say on this.
Thanks & regards,
Jomy