Nah never played in windowed mode. Used to play with about 1/6th of screen black either side of game.
My resolution changes on my actual desktop from 1366x768 to 1024x768 when i use the .exe.
My cursor is out of line too. Click say my char screen tab and it opens my bag... -.-
Tried alt+enter etc
Tried changing res ingame and relogging
Tried minimising and changing desktop res back to 1366x768
Tried deleting everything and repatching
x
This happens because your computer is scaling the game when you run it full screen even if you see black bars on side - it may still be stretched some way. Switch the scaling off in your video card setting or display setting (standalone external displays have it in their hardware and its controled by the buttons on the display bezel) and your clicks should be in right place.
If you run in windowed mode, don't resize the window because then the same thing will happen, your mouse clicks won't be where they should be on gui, probably on playing area also, like you click mob and nowt happens. If you find that window too small, change your desktop to some lower res but whatever you do, don't pull on the windowed mir window edges to change its size.