There are 2 things that have bothered me about the interface:
1. Unless I am doing it wrong, I cannot go scroll around in the technology tree without inadvertently changing what I am researching. I know I can always change it back before I leave, but this can be annoying especialy if I forget, plus if I am scrolling on my opponents turn and it becomes suddelly my turn, I suppose I will waste a turn of research on wahatever I was looking at? But anyway I have frequently left that screen having changed what I was researching without realizing it.
2. The ideology screen works in the opposite way - often not responding to what I am clicking, so I leave that screen having selected nothing at all.
At the very least the screens should work the same, but I would prefer making it easier to scroll around in the tech tree window without always portantially changing what I research. I dont have the whole thing memorized, so on my opponents turn I like to start planning out ahead a little bit.
So how about forcing a click on a specific item to change research, and not on the main tree headings and then auto-selecting whatever is first in the tree, which is what it appears to do now.