Floating & embedded game workspace incorrectly reports previous window size when re-run

[Yagich]

Tested versions

• Reproducible in v4.6.2.stable.official [71f334935]

System information

Godot v4.6.2.stable - on Wayland - Wayland display driver, Multi-window, 2 monitors - Vulkan (Forward+) - dedicated AMD Radeon RX 7600 (RADV NAVI33) - KDE Plasma 6.5.5

Issue description

When resizing a floating embedded game workspace window, a label shows the viewport size. When the game is stopped and run again, that label is not updated with the correct window size:

Occurs on both native Wayland and XWayland on KWin, though on XWayland it only occurs if the new size is smaller than the size defined in ProjectSettings display/window/size/viewport_[width/height]

Steps to reproduce

• Enable embedding and floating and run the project;
• Resize the window and close the project;
• Run the project again.

Minimal reproduction project (MRP)

n/a