diff --git a/lib/private/Setup.php b/lib/private/Setup.php
index a44b0fd488f38..d61301fa6e1bb 100644
--- a/lib/private/Setup.php
+++ b/lib/private/Setup.php
@@ -523,6 +523,9 @@ public static function updateHtaccess() {
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !\\.(css|js|svg|gif|png|html|ttf|woff2?|ico|jpg|jpeg|map)$";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !core/img/favicon.ico$";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !core/img/manifest.json$";
+			foreach (\OC::$APPSROOTS as ['url' => $url]) {
+				$content .= "\n  RewriteCond %{REQUEST_FILENAME} !" . trim($url, '/') . "/[\w-_]+/img/manifest.json$";
+			}
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !/remote.php";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !/public.php";
 			$content .= "\n  RewriteCond %{REQUEST_FILENAME} !/cron.php";