Build/Buy Mode Broken?

I don't have any CC installed & the only thing I can think of is maybe the new update created this bug, or maybe it's a bug with the gallery? Idk either way, I placed a few lots in Newcrest today, and when I try to use build/buy mode, it only lets me do one thing at a time. For example, I go to change the living space from public to residential, but I can only do one room at a time, then go into live mod, then back into build/buy mode to click on another room or place an object or literally anything.