Hey!
In 1.7 I started making it so STM will act more naturally like Unity's Text component, but I'm starting to regret doing this... it's supposed to use the Content Size Fitter or other layout elements to determine the size, so I'm not too sure what to do here? I could try adding back the old methods in the next update under a bool maybe? Right now it works like... Unity UI text always assumes autoWrap is set to the rectTransform's width, and verticalLimit is set to the rectTransform's height, so those properties are always on and the content size fitter just expands the rect to fit all potential text.
Sorry for the mess this has caused, I won't be able to fix this for about 2 weeks or so, but I really would like to solve this issue of how STM should behave with Unity UI once and for all.