I wonder if we are half way through the transition announced here:
( Links with both a title and a URL are still blue and clickable, but it looks as if automatic promotion of xyz@xyz.com and other link-like patterns has been switched off, for the moment.
I can’t see a preferences option yet, but it sounds like one is planned)
In the meanwhile, you can still manually promote link-patterned strings with Format > Edit Link ... etc