So I have one player that states to me in private whenever there is an obligation session that isn't theirs , that they dislike obligation sessions. When I ask for them to explain themselves there really isn't a justifiable reason they can come up with. I try to run a game that everyone can enjoy so when I get complaints, especially more than once, I feel I need to figure out the problem and resolve it. If not, the complaints over time will burn me out on GMing for the "plaintiffs".
My only guess is that this player doesn't like the spotlight to be focused on the other players. Problem I see with that logic is this player does not engage with the plot or the role-play at all unless prodded by other players and in the past has had little RP impact on their own obligation session. I've told them everyone gets their obligation session eventually. This player just joined a new group during a session that happened to be focused on another player's obligation and, like clockwork, this player told me afterwards that they dislike obligation sessions. I responded by explaining the previous session had focused almost exclusively on the other players so it was only fair that the only other player in the group get their moment, plus the main plotline was already headed in that direction anyway so it naturally went towards that. When I try to get this player to talk specifically about why they don't like obligation sessions they just stop talking about it so I don't really understand the root of the issue. To me it looks like they get jealous whenever someone else has a session focused on their character but I don't want to assume that.
Here's the catch with dealing with this situation: They are a close family member.
Anyone else experienced a similar situation before? What did you do?