@Mentions in Review documents now searches EMAIL domains, in addition to NAMES. We need this 'new feature' turned off.

When typing @ and a name to tag someone in a review document comment, the search box previously would search NAMES, and it now searches EMAIL ADDRESSES AND NAMES, this is impossibly unfeasible for us. We always get a box saying there are too many results to display unless we keep typing more letters for names. This has angered several power users who are used to tagging people by entering as few letters as possible (this would be fixed if the feature were created to set up reviewer groups). 

PLEASE give us the ability to turn OFF email searching in name searches.