Since PEP 585 implemented in Python 3.9, one can use the generics syntax even with built-in collections, not just those included in typing (e.g. list vs. typing.List).
As such, in the screenshot below, the type hint for argument c isn't highlighted properly. In list[int], both list and int should be highlighted, whereas only int is highlighted currently. The type hint for argument b is highlighted correctly (and same for a).
- Editor name and version: VS Code 1.51.1
- Platform: Ubuntu 16.04
- Color scheme: Tomorrow Night (also tested with other ones but none exhibit the desired behavior)
- MagicPython version: From the VS Code extension = 1.1.0
- A screenshot:

- 5-10 lines of surrounding code: None