Prior to version 2017.x, whenever I had a project open and opened a new one (something not uncommon), the new project window would be opened in front of the already opened project window (which makes sense, since I'm opening it to look at it). However, starting with v2017, this does not happen; instead the window is opened behind the existing window, and I have to switch to it (assuming it's opened at that point). I went back and double checked in 2016.3.2 to verify this.
I've looked through the settings in both versions, and I see no option to specify this. It would be really nice to have this functionality work like it used to.