The CM on my board posted this the other day and it worked for one of my boardies:
"One of our CLs reported that she was unable to see replies to threads in her favorite browser. In her zoom settings, she zoomed out to 75% and was able to see all of the replies to a thread."
It worked for my boardie in FF and may work in other browsers too.
Since I don't use a mobile device to access the boards I haven't been keeping up with those issues...but I don't think that the mobile problems have been resolved so nobody can see replies on phones or tablets yet.