Unable to check songs to sync iTunes 12.7.1.14

I just updated to iTunes 12.7.1.14 today and I am no longer able to choose what songs sync to my iPhone. The box I used to check on the left hand side is gone. I also tried right clicking on the track and the "uncheck song" option is also gone. Does anyone else have this problem or a work around? I have over 90GB of music in itunes, but do not want it all on my phone.