This particular bug is resolved in Pega 7.3 release and it seems you need an hotfix for the Pega 7.2.2 too . Please raise an SR with GCS by mentioning the particular hfix given for 7.1.7 so that it will be easy for him to co-relate the things. I am not sure whether there is already a hotfix for 7.2.2 or not but the bug is fixed in 7.3.
The respective GCS engineer will help you out to get the hotfix. So do not raise the SR with request of existing hotfix instead raise it with Product Defect.