Not just that, trivial bugs aren't getting fixed. The charts showing response times, for instance, sometimes go crazy when you change the settings for time window or interval.
Since you work for Heroku / Salesforce, letting your users know if this is a dead product or not would be a good first step. If not dead, explain why there have been no updates and what is to be expected moving forward.
Given that, I also don't want to forget the little bugs, I believe they are important to a great user experience. I think this is true for any product, but especially true for Heroku.
Doesn't look well received, Heroku is a dead product for devs.