Hello! Hope you're doing well.

I found a strange behavior while using your demo page when comparing two sentences.
I removed just one comma from the text and instead of highlighting just this comma I got a bunch of other highlights.

You can try it yourself.

Here is the text for "Left Content":
Normal text: In the process of internal desktop applications development, many different design specs and implementations would be involved, which might cause designers and developers difficulties and duplication and reduce the efficiency of development.

And here is the text for "Right Content":
Normal text: In the process of internal desktop applications development many different design specs and implementations would be involved, which might cause designers and developers difficulties and duplication and reduce the efficiency of development.