Haven’t noticed this before now, but inspecting a citizen’s stats closes the citizen management window in r180. Opening it again fixes this - it won’t close again even if you check out other citizens’ stats.
I’m using a 1920 x 1200 monitor in windowed mode for what it’s worth.
When you have a character sheet open it throws an error when you try to open the hearthling list (to change jobs, pick a new hearthling to look at, etc)