This does actually let me proceed. The launcher is finally responsive to user input and dragging, so I'm able to enter (and, most importantly, save) my credentials. As I have 3 accounts, I may use this to create my local.dat files so I can cp them in place and restore -autologin. Unfortunately, it means the game runs inside of that virtual desktop window, which is a pain. Maybe we can work out how to script turning this setting on and off, so it's on for the patch UI, but then off when actually playing the game? For others who want to try this: run the bin/user_config script in the installer, flip to the Graphics tab, and check the box next to Emulate a virtual desktop. Pick a size that is reasonable for your display settings. You know, I wonder if the issue isn't all the transparency in the launcher window that's used to create the non-rectangular window...