URGENT - Unable to create support group in any additional sites

We have recently upgraded to 9.1 Build 9120 and have noticed that when I try and create a new support group against a site, it allows me to add it, but then its saves it against the default setting, not the selected site.

I have tried this against multiple other sites and each time it saves it against the default setting. the default setting here is just for the UK configuration, we have multiple other Regions each having their own sites and support groups etc.

Please see screen shots attached, in this example I created the Support Group against the Wroclaw site, which is part of our European region.

This is a major issue as it mean we are unable to add any additional support groups unless they are for the UK.

I would appreciate a response on this urgently.

Thanks Lynne