Highlighting not always working correctly

[rightaway]

The highlighting doesn't show properly all the time. And then it works if I change something, even deleting an empty line and putting it back "resets" the highlighting, but then it stops working again a few minutes later. I'm not sure what's triggering the highlighting to go back to being wrong. This happens in different files. Using latest version of vscode and this extension.

It shows wrong in various parts of the file, like the highlighting of JSON object keys and values. And sometimes the method like GET or POST is showing without highlighting.