Emulator

This is to report a couple of things relating to the Auto Adjust Window Size option. Dolphin 5.0-1644, Windows 10 14393, Nvidia driver 375.63.

When Auto Adjust Window Size is used and internal resolution is not auto (i.e. Native or another fixed value), the user can resize the emulation window but it immediately snaps back to the previous size when the user releases the mouse button.

In that case I think it would be better to make the window non-resizeable. Or alternatively, allow the user to make the window larger, but have the emulation image remain the same size centred within it. (The user might prefer to have some black space between the game image and the window borders.)

I also noticed a difference in behaviour between Vulkan and the other backends.
All except Vulkan: As the user drags the mouse to resize the window, the image resizes in real time. But when the user releases the mouse button the window snaps back to the previous size.
Vulkan: The window remains the new size with the emulation image scaled to fit when user releases the button, which is probably not the intended effect.