diff --git a/packages/vite/src/node/plugins/asset.ts b/packages/vite/src/node/plugins/asset.ts
index ec274b2aef1788..7c82bbd1e96027 100644
--- a/packages/vite/src/node/plugins/asset.ts
+++ b/packages/vite/src/node/plugins/asset.ts
@@ -175,9 +175,7 @@ export function assetPlugin(config: ResolvedConfig): Plugin {
       // raw requests, read from disk
       if (rawRE.test(id)) {
         const file = checkPublicFile(id, config) || cleanUrl(id)
-        if (config.command !== 'build') {
-          this.addWatchFile(file)
-        }
+        this.addWatchFile(file)
         // raw query, read file and return as string
         return {
           code: `export default ${JSON.stringify(
diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index 709c17967361fe..70415a10ea4253 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -380,7 +380,7 @@ export function cssPlugin(config: ResolvedConfig): Plugin {
         moduleCache.set(id, modules)
       }
 
-      if (deps && !isBuild) {
+      if (deps) {
         for (const file of deps) {
           this.addWatchFile(file)
         }
diff --git a/packages/vite/src/node/plugins/loadFallback.ts b/packages/vite/src/node/plugins/loadFallback.ts
index ad33a771bbf059..7d56797e48e681 100644
--- a/packages/vite/src/node/plugins/loadFallback.ts
+++ b/packages/vite/src/node/plugins/loadFallback.ts
@@ -12,11 +12,11 @@ export function loadFallbackPlugin(): Plugin {
       try {
         const cleanedId = cleanUrl(id)
         const content = await fsp.readFile(cleanedId, 'utf-8')
-        // this.addWatchFile(cleanedId)
+        this.addWatchFile(cleanedId)
         return content
       } catch (e) {
         const content = await fsp.readFile(id, 'utf-8')
-        // this.addWatchFile(id)
+        this.addWatchFile(id)
         return content
       }
     },
diff --git a/playground/transform-plugin/vite.config.js b/playground/transform-plugin/vite.config.js
index afa97e8ff77f83..dae98317ad1de5 100644
--- a/playground/transform-plugin/vite.config.js
+++ b/playground/transform-plugin/vite.config.js
@@ -7,17 +7,15 @@ let transformCount = 1
 const transformPlugin = {
   name: 'transform',
   load(id) {
-    if (id === file && typeof this.addWatchFile === 'function') {
+    if (id === file) {
       // Ensure `index.js` is reloaded if 'plugin-dep-load.js' is changed
       this.addWatchFile('./plugin-dep-load.js')
     }
   },
   transform(code, id) {
     if (id === file) {
-      if (typeof this.addWatchFile === 'function'){
-        // Ensure `index.js` is reevaluated if 'plugin-dep.js' is changed
-        this.addWatchFile('./plugin-dep.js')
-      }
+      // Ensure `index.js` is reevaluated if 'plugin-dep.js' is changed
+      this.addWatchFile('./plugin-dep.js')
 
       return `
         // Inject TRANSFORM_COUNT