diff --git a/packages/amis-editor-core/scss/control/_tpl-formula-control.scss b/packages/amis-editor-core/scss/control/_tpl-formula-control.scss
index ae6cf4d94..1d5b4edd7 100644
--- a/packages/amis-editor-core/scss/control/_tpl-formula-control.scss
+++ b/packages/amis-editor-core/scss/control/_tpl-formula-control.scss
@@ -100,7 +100,8 @@
   &-buttonWrapper {
     height: auto;
   }
-  &-button {
+  &-button,
+  &-buttonWrapper-button {
     height: 100%;
     background-color: #f7f7f9;
     padding: 4px 8px;
diff --git a/packages/amis-ui/src/components/formula/VariableList.tsx b/packages/amis-ui/src/components/formula/VariableList.tsx
index 86a9cac63..bb5432b39 100644
--- a/packages/amis-ui/src/components/formula/VariableList.tsx
+++ b/packages/amis-ui/src/components/formula/VariableList.tsx
@@ -286,7 +286,7 @@ function VariableList(props: VariableListProps) {
   }
 
   function handleChange(item: any) {
-    if (item.isMember || item.memberDepth !== undefined) {
+    if (item.isMember || item.memberDepth !== undefined || !item.value) {
       return;
     }
     onSelect?.(item);