When playing Kislev Expedition in The Lost God, if you look at the "Shieldmaker's Cabin"
building tree in major cities, you see it's about a shieldmaker, but it uses the image "kislev_practice_grounds_prologue.png"
Then when you look at the building tree of the "Practice Grounds"
it uses the image "Kislev shieldmakers cabin prologue.png"
So it seems these two images were mixed up and should actually be switched
Shieldmaker's Cabin with the Practice Grounds icon:
Practice Grounds with the Shieldmakers's Cabin icon: