2 files changed, 6 insertions, 7 deletions

diff --git a/server/lib/client-html.ts b/server/lib/client-html.ts
index 0142b248b..38697401a 100644
--- a/server/lib/client-html.ts
+++ b/server/lib/client-html.ts
@@ -12,7 +12,6 @@ import { HTMLServerConfig } from '@shared/models'
 import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/core-utils/i18n/i18n'
 import { HttpStatusCode } from '../../shared/models/http/http-error-codes'
 import { VideoPlaylistPrivacy, VideoPrivacy } from '../../shared/models/videos'
-import { isTestInstance } from '../helpers/core-utils'
 import { logger } from '../helpers/logger'
 import { CONFIG } from '../initializers/config'
 import {
@@ -231,7 +230,7 @@ class ClientHtml {
   static async getEmbedHTML () {
     const path = ClientHtml.getEmbedPath()
 
-    if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]
+    if (ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]
 
     const buffer = await readFile(path)
     const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig()
@@ -303,7 +302,7 @@ class ClientHtml {
 
   private static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) {
     const path = ClientHtml.getIndexPath(req, res, paramLang)
-    if (!isTestInstance() && ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]
+    if (ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]
 
     const buffer = await readFile(path)
     const serverConfig = await ServerConfigManager.Instance.getHTMLServerConfig()
diff --git a/server/lib/plugins/plugin-manager.ts b/server/lib/plugins/plugin-manager.ts
index 39e7f9a5b..1305f660f 100644
--- a/server/lib/plugins/plugin-manager.ts
+++ b/server/lib/plugins/plugin-manager.ts
@@ -277,6 +277,8 @@ export class PluginManager implements ServerHook {
       logger.info('Regenerating registered plugin CSS to global file.')
       await this.regeneratePluginGlobalCSS()
     }
+
+    ClientHtml.invalidCache()
   }
 
   // ###################### Installation ######################
@@ -419,6 +421,8 @@ export class PluginManager implements ServerHook {
     }
 
     await this.addTranslations(plugin, npmName, packageJSON.translations)
+
+    ClientHtml.invalidCache()
   }
 
   private async registerPlugin (plugin: PluginModel, pluginPath: string, packageJSON: PluginPackageJSON) {
@@ -473,8 +477,6 @@ export class PluginManager implements ServerHook {
   // ###################### CSS ######################
 
   private resetCSSGlobalFile () {
-    ClientHtml.invalidCache()
-
     return outputFile(PLUGIN_GLOBAL_CSS_PATH, '')
   }
 
@@ -482,8 +484,6 @@ export class PluginManager implements ServerHook {
     for (const cssPath of cssRelativePaths) {
       await this.concatFiles(join(pluginPath, cssPath), PLUGIN_GLOBAL_CSS_PATH)
     }
-
-    ClientHtml.invalidCache()
   }
 
   private concatFiles (input: string, output: string) {