I should have been more specific in the body of my post, sorry.
I am specifically wondering about the transform modifier
.lowercase
it works fine if I just do the formatting
{date:EEEE MMM d, yyyy}
gives me
Tuesday May 4, 2021
however
{date:EEEE MMM d, yyyy.lowercase}
ends up as (just picks up the period)
Tuesday May 4, 2021.