I ended up realizing now that the value of the keys when there is something later the same thing happens.

Example:

I think 'Interface' is not highlighted due to the problem mentioned above

I would need more information to understand what you are doing. An example of the code you are using to get this result is needed as I can only assume what you are doing. If you would put together a working example (StackBlitz, CodePen, etc) that would be the most helpful to determine if it's something with this plugin, or if it's an issue with Prism/Hightlight.js (which is not something I can fix).

Also please use code blocks over screenshots, it's easier to copy paste if testing is needed.