I took Rebecca’s incongruous tea in a glass as intentional.

A visual joke about the contrast between Richmond, a small community based club with modest facilities, hence the limited old school hot drinks options, and Rebecca’s image as a smooth business professional with an upper class lifestyle, hence the ostentatious presentation in the glass.

A little hammed up and unrealistic, but not necessarily a goof.

I think Ted Lasso needs a US remake the least of any UK-set show ever written. Unlike those other shows, Ted Lasso is specifically written to be watchable for US audiences. Ted is a conduit for US viewers, as he learns about British football culture the viewers learn with him. UK viewers get to see an outsider’s perspective on it all.