1 pixel line on top of the screen when "native tabs" is enable on MacOS

[wangcheng]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.101.1
• OS Version: MacOS 15.5

Steps to Reproduce:

1. Enable "native tabs" in settings.
2. Enter MacOS native fullscreen mode.
3. Create a new tab to reveal the tab bar, then close the 2nd tab.
4. There is a line on top of the screen. If it doesn't appear, move the mouse around top of the screen to reveal and hide the menubar. The line should show up at some point.

It may be difficult to see the line in the screenshot. It should be more visible on a black background.

My MacBook doesn't have a notch. I don't know if this issue exists on the Macs that have a notch. If your computer has a notch, you should be able to reproduce it on a external regular screen.