Is there any option in the game or the launcher where I can launch it in windowed mode instead of fullscreen?
I noticed if you press F2 while in-game, it does make it windowed (but I was unable to move the cursor outside of the game window unless I alt+tab-ed to another open one-and clicking anywhere in the game-even the title bar to drag it around-causes it to recapture the mouse (after release if dragging)).
Just reposting from another thread for this same issue essentially. This is kinda a necro I think but I seemed to have found a way searching for a way to resize windows with keyboard shortcuts. press and hold the windows key then use the right/left arrow keys. it docks it to the left or right and seems to half the thickness of the window. It's far from perfect but its stops the super size window.