[MlMt] r5907 and Group Address completion

[Edward Thome]

Hello, Everyone.

Has anyone else noticed this issue on r5907.
I have a group address for all members of my department, and it used to 
complete to include all 29 members. Now it only shows a small number. On 
a computer running OS X 10.15 it shows about 1/3 of them. On a computer 
running OS X 13 public beta it only shows 1/6 of them.

Thank you in advance,
Ed