Verifies viewport stick-to-bottom behavior when prompt has space below editable area.
Message count: 150
Running: testExpandLastVisibleObjectRemainsInView
Force selecting index 149
Is at bottom: true, should stick: true, selected element is fully visible? true
Expanding object
Is at bottom: false, should stick: false, selected element is fully visible? true
Collapsing object
Is at bottom: true, should stick: false, selected element is fully visible? true
Running: testExpandFirstVisibleObjectRemainsInView
Force selecting index 146
Is at bottom: false, should stick: false, selected element is fully visible? true
Expanding object
Is at bottom: false, should stick: false, selected element is fully visible? true
Collapsing object
Is at bottom: false, should stick: false, selected element is fully visible? true