Some of my users that refuse to admit they need glasses have changed the
default Windows font size found in Contol Panel > Display to Medium (125%)
or Larger (150%). This causes the names and addresses in the To/CC/BCC lines
of the GW 2014 client to be cut off at the bottom. Is there any way to
remedy this besides setting the default font size back to Smaller (100%)
that doesn't involve decreasing the screen resolution?

Perhaps something in the registry?

Thanks in advance.