Text has stopped calculating its size in 5.2

I had a perfectly working chat component in 5.1 Now in 5.2 it does not work. The problem - Text sizes are always 0,0. They were calculating fine on 5.1 How do I fix this?

What I want: A chat like window where lines appear on the bottom of the window. After a new line appears, the previous one is shifted up. This was working perfectly in 5.1

Now in 5.2 this is broken. All lines are 0 width and height and are stuck on the bottom, invisible. If I change their size manually to something, I can see them and they behave normally. How do I make Texts calculate their sizes correctly?

My Chat structure is like this:

The overlord Chat object: http://i.imgur.com/Ig0fGl9.png

The content object in that Chat: http://i.imgur.com/R7UWWdu.png

The single line in chat: http://i.imgur.com/Lyg0RjH.png

The code that adds line to chat: http://i.imgur.com/q1I2kIZ.png