In the latest Visual Studio 2022 update 17.9.0, they changed the closed outlining style to be like in VSCode
Current:
Previous one:
Is there an option to switch back to the old one?
As Information: A Microsoft Developer named Marco Goertz created a Visual Studio extension called "Bring Back Plus/Minus" that restores the original expand/collapse to the +/- instead of the >/v. I've been using it since it came out and have had no issues with it.
You can find it on the Visual Studio Marketplace. It's a free extension. https://marketplace.visualstudio.com/items?itemName=MarcoGoertz.BringBackPlusMinus