When I do something similar in my installation of MATLAB version R2021a, I get a little popup that says "No completions found". That's what I would expect for this specific case, because there isn't really much you could type after the "(".
To really help you, I think we'd need quite a bit more information. (Basically, we need to figure out how to reproduce the problem to understand what might be causing it.) If that's what you'd like to do, please share the following:
- What version of MATLAB are you running?
- What's the output of the "ver" command?
- Do you have documentation installed?
- Can you provide more examples of when you run into this problem? Is it just with SimBiology objects? Or generally in MATLAB?