Button example is not working correctly

## Bevy version

#7598, but on my fork so I recommend checking it for yourself.

## Relevant system information

Rust version: 1.67.0
OS: Windows 10

## What you did

`cargo run --example button`

## What went wrong

The hovering works correctly, but when I press the button it doesn't react until I move the cursor or release the mouse button.

## Additional information

It works without the `WinitSettings::desktop_app()` resource, so I expect the bug to be related to it.