SetActive(true) not working properly

I started running into this problem after updating Unity to version 2017.2.0b4, everything was working fine on 2017.1.0b5. I have bits of code like the following all over the place in my project:

 placingPlayButton.SetActive(true);

This does make make the object appear active in the hierarchy, but the button is invisible and cannot be pressed. Deactivating the parent then reactivating it seems to fix the problem, but I don't really want to be doing this all the time. The code I'm using to fix this at the moment is shown below.

 placingPlayButton.SetActive(true);
 placingPlayButton.transform.parent.gameObject.SetActive(false);
 placingPlayButton.transform.parent.gameObject.SetActive(true);

It's worth noting that the parent object is active at all times, so it's not like it being deactivated is the problem. Also, I've only been using this to activate and deactivate UI elements attached to canvases, not sure if the problem happens elsewhere.

Thank you for any help.