diff --git a/core/tree.go b/core/tree.go
index 5b06a3f728..1a2b8cff47 100644
--- a/core/tree.go
+++ b/core/tree.go
@@ -592,6 +592,7 @@ func (tr *Tree) Position() {
 	sz := &tr.Geom.Size
 	sz.Actual.Total.X = rn.Geom.Size.Actual.Total.X - (tr.Geom.Pos.Total.X - rn.Geom.Pos.Total.X)
 	sz.Actual.Content.X = sz.Actual.Total.X - sz.Space.X
+	sz.Alloc = sz.Actual
 	tr.widgetSize.X = sz.Actual.Total.X
 	tr.WidgetBase.Position() // just does our parts
 
@@ -611,10 +612,12 @@ func (tr *Tree) ApplyScenePos() {
 	sz := &tr.Geom.Size
 	if sz.Actual.Total == tr.widgetSize {
 		sz.setTotalFromContent(&sz.Actual) // restore after scrolling
+		sz.Alloc = sz.Actual
 	}
 	tr.WidgetBase.ApplyScenePos()
 	tr.applyScenePosChildren()
-	tr.Geom.Size.Actual.Total = tr.widgetSize // key: we revert to just ourselves
+	sz.Actual.Total = tr.widgetSize // key: we revert to just ourselves
+	sz.Alloc = sz.Actual
 }
 
 func (tr *Tree) Render() {