Boss advice

I have a boss who I can’t completely figure out their intentions but the recurring issue I personally cannot take anymore is that they pick and choose when they want to be included in something I manage. Sure they’re my boss, but I have weekly meetings 1x1 and aside from “fyi” emails to ensure the “boss” is aware of my happenings. What’s frustrating for me is this boss gets involved in my “cool” shit and has no value or reason to be involved. But is asking if they could be included as they’d love to be apart of it only for one reason I can imagine - because they know what I’m cooking is going to be something they want to either share credit or take it from me. How should I approach it with this boss? For example, this week a scenario came up where I provided a full scope of all details of a planned event to my boss and our head of dept, they both had no questions and the head just advised me to begin socializing this event internally with outside departments. Post meeting, my boss messaged me and said “can you please add me when you schedule the meetings with person A and B, I’d love to be part of it.” I said sure. By in reality, I’m frustrated as I know this bosses intentions. It’s to ensure I do not get full credit. One part of me wants to approach the boss early next week and question their why and purpose of being involved, do they not trust me? Am I not updating enough? … to make them think and essentially call them out. Or do I just drop it and let them be included but ensure they do not feel they can run or chime into my meeting? Any advice would be appreciated!