1 files changed, 3 insertions, 1 deletions
diff --git a/ui/form/ListScrollForm.js b/ui/form/ListScrollForm.js
index 77699c2..300fed4 100644
--- a/ui/form/ListScrollForm.js
+++ b/ui/form/ListScrollForm.js
@@ -39,6 +39,8 @@ module.exports = class ListScrollForm extends Form {
     // posProp) the next element should be.
     let nextPos = 0
 
+    this.sizeProp = this.getSizeProp()
+
     for (const item of itemsPastScroll) {
       item.fixLayout()
 
@@ -160,7 +162,7 @@ module.exports = class ListScrollForm extends Form {
       .reduce((a, b) => a + b[this.sizeProp], 0)
   }
 
-  get sizeProp() {
+  getSizeProp() {
     // The property used to measure the size of an item. If the layoutType
     // isn't valid (that is, 'horizontal' or 'vertical'), it'll return null.