Chat pushes me away from Global

Platform, device version and operating system:
Steam, Windows 7 x64

What you were expecting to happen, and what actually happened:
Start on map.
Click chat to open. Opens to Global Chat in Lite Chat display (my previous selection).
Click menu, choose Settings.
Click Lite Chat. Now I’m being shown my Guild Chat in Lite Chat display!
I was expecting to go back to Global in Lite.
To return to Global, I have to now click menu, Global Chat.

How often does this happen? When did it begin happening?
First time, but it’s happening every time I try it.
Restarting fixed it – for now.
(My last post, a couple of hours ago, was in Guild Chat. Maybe this is related to that scrolling bug, where chat tries to show your last post in Global. NOT the way we want it to behave.)

I do wonder what’s going on under the hood for this to happen!