Keyboard and mouse button states are lost when love.window.setMode() is called (11.5 on Windows) about love HOT 4 CLOSED

You'll run into a bunch of issues if you recreate the window inside an input press event. I recommend doing it on release instead.

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It might also be a good idea to use an event bus, for example:

function love.changescreenmode(width, height)
  love.window.setMode(width, height)
end

function love.keypressed(key)
  if key == "f" and love.keyboard.isDown("lctrl") then
    love.event.push("changescreenmode", 800, 600)
  end
end

The event execution will be delayed until the next frame, so you can collect everything what you need in current.

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I think SDL assumes that all keys/buttons are in an unpressed state when it creates a window because any keypress that happened prior to the window being created is considered to be outside the scope or "jurisdiction" of the window. The input event system ignores keypresses and mouse clicks that happen outside the window and the isDown() states need to correspond with the events received. However, in the case of subsequent windows being created (such as toggling fullscreen) maybe the handover from one window to another could be handled better because even though it's a new window there is (or should be) continuity in the application.

Something that might not be too difficult to fix: When you hold down a mouse button in relative mode (with grabbed pointer) during a love.window.setMode() call the grab stops functioning and the pointer can leave the confines of the newly created window. I think this can be solved by re-grabbing the new window. I tried this using Win32 API calls and it worked. I'm not sure if this is an issue for Love2D or SDL.

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love 12 doesn't destroy and recreate the window when setMode is called, so this shouldn't be an issue anymore with that version.

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