After updating Visual Studio to the latest version I no longer have syntax highlighting for method calls
Here's a screenshot of the default "Dark" theme. Notice the method calls like _spriteBatch.Begin() have "Begin" highlighted.

Here's a screenshot of the same code with "Dracula" theme applied. Previously the method calls would be the same green as the method declaration, but now they have no syntax highlighting.

I'm not sure what version of Visual Studio I was on before updating that had correct coloring, but I am seeing this issue on the latest versions (17.9.4 and 17.9.5). I have tried installing dracula from the official Visual Studio Extension, as well as manually installing through the vsix file and both experience the same issue.