It has indeed happened before: see https://seeclickfix.com/issues/4041287, which I kept open for three months until New Haven, indeed Doug Hausladen himself, reported that "TT&P has addressed". I link there to an earlier version of the same problem, from October 2017.
Having said that, I haven't myself seen the problem recently (I would have flagged it immediately!)

Alder for the ward here - @Transportation, Traffic, and Parking - can we get an update here?

This issue will continue to be reported and continually closed each time someone insinuates the issue is resolved.

We can see this is exactly what happened with https://seeclickfix.com/issues/4041287

Sorry to bust your bubble, but TT&P Director Doug Hausladen closed the last ticket after comments were posted by steve21 and Peter Morgan which gave plausibility that the issue was actually resolved.

Please don't blame me for preaching to the choir. Doug Hausladen is the director of TT&P so he's the one who calls the shots. It's a shame tickets have been closed based upon a few short comments instead of concrete statistical analysis of the traffic light intervals.

During an interview with the Hartford Courant in September 2016, Mr. Hausladen made the following comments:

"I am a hard-core lab scientist. I build hypotheses, test them and throw them out as soon as they fail."

Well, it appears the traffic lights at the corner of Edwards Street and Prospect Street need a little more statistical analysis before being thrown out.

Please contact me if you want real help. I wish to provide results that our city apparently cannot. I'm not even an alderperson. I'm just some regular dude who sees what our city's employees don't.

Thank you for your post. We are currently investigating this concern.

Intersection plans and operation have been verified. Please note that this intersection controller also operates Hillside and therefore coordination must be programmed between the two.

Thanks for fixing this request!