When you try to resize text (I've turned the text vertical), each time you try to transform it, it shifts back to horizontal before it changes back to vertical. This makes resizing such a pain because it doesn't show you what it will look like before you commit your change.
I've had the same problem scaling multiple layers at once, and deeply sympathize, but I'm not seeing it transforming even 2 layers of text. I'm on Mac running El Capitan. What system are you on, and are you using the latest PS CC 2018?