I agree, and have commented on this problem also!

Thank you for reporting your concern to City of Cambridge via Commonwealth Connect. We have reviewed the information you provided our staff and will be investigating this issue further.

Thanks for your report. We were unable to find any issues with these optically programmed signal indications but they are only meant to be seen by people in the travel lane on the street as you get close to the signal. Please reopen this report if you notice the issue again.