Its intentional, as that thing was very slow, especially in late game.Is there any reason as to why not all buildable buildings show up at the start of the turn in the popup on the right side of the screen?
I was wondering why i couldnt build some buildings i researched. I then examined the city and went into buildings tab and there were a lot of them there that I could build but they didnt show in the popup ...
Im on latest SVN
Instead you can hide it, and check this "No Production Popup" option.
Spoiler :
Anyway you should have 5 or more things in queue, as it doesn't make much sense to put single thing here.