All collapsed nodes of the hierarchy tree get expanded after a constraint is removed

1. Open a segmented barbar photo.
2. In the hierarchy tree, collapse the "body" region (hiding "head", "thorax", and "abdomen").
3. Click "Set constraint" next to "body". As expected, the constraint gets applied and the node remains collapsed.
4. Click either "Remove constraint", or "Set constraint" next to another node. Unexpectedly, the "body" node (and any other collapsed nodes) gets expanded. Nothing serious, might be slightly confusing in larger hierarchies.