diff --git a/packages/compiler-core/src/transforms/vIf.ts b/packages/compiler-core/src/transforms/vIf.ts
index 2faa16374ee..e8ed3946340 100644
--- a/packages/compiler-core/src/transforms/vIf.ts
+++ b/packages/compiler-core/src/transforms/vIf.ts
@@ -129,7 +129,12 @@ export function processIf(
     let i = siblings.indexOf(node)
     while (i-- >= -1) {
       const sibling = siblings[i]
-      if (__DEV__ && sibling && sibling.type === NodeTypes.COMMENT) {
+      if (
+        __DEV__ &&
+        !__TEST__ &&
+        sibling &&
+        sibling.type === NodeTypes.COMMENT
+      ) {
         context.removeNode(sibling)
         comments.unshift(sibling)
         continue
@@ -137,10 +142,13 @@ export function processIf(
 
       if (
         sibling &&
-        sibling.type === NodeTypes.TEXT &&
-        !sibling.content.trim().length
+        ((sibling.type === NodeTypes.TEXT && !sibling.content.trim().length) ||
+          sibling.type === NodeTypes.COMMENT)
       ) {
         context.removeNode(sibling)
+        if (sibling.type === NodeTypes.COMMENT) {
+          comments.unshift(sibling)
+        }
         continue
       }