hi all,
here is a workaround:
- open outlook.
- go to view tab, click change view and choose single.
- search the emails, the categories and flags will show in the search result.
moreover, as this feature is for outlook 2016 client and our forum focuses on office 365 for business online service, it is suggested you post it on our outlook client forum for dedicated help.
thanks for your understanding.
franky