Positive vs. Negative experience working with Product

I would love to hear what others here have learned while working with their PMs past and present. I have brushed shoulders with a few and only closely worked with two PMs in our sort-of-cross-functional team, in my career thus far. They are both likable people but it took me a long time to realize that their feature requests were poorly scoped, lacking crucial details, and oftentimes had no acceptance criteria. In hindsight, I am not sure why none of the IC's with years under their belt never really spoke up about that (which led me to believe that was just the way things were).

Fortunately, our goals with Product are better aligned these days and our relationship has been healthy, so we are pretty comfortable give/taking feedback during Sprint Retros, so much of said issues have diminished. However, the lack of clarity in the tickets is still present from time to time, and now when I notice this, it fatigues me to know that I will have to set aside time to hop on a call and ask them for information (which in my mind, should already have been in the ticket?). I see most of my teammates having to do this as well, but I have not noticed their irritation over it. Sometimes, I wonder if I am wishing for an ideal that is rare or does not exist.

Mini rant aside, I would love to know some of your guys's good/bad experiences with Product and how you navigated through them. (i.e. What made it smooth/difficult to work with them? What steps did you take to mitigate the issues?) Thank you!