diff --git a/package.json b/package.json
index c5525465f..582ee1e3c 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "electron-mail",
   "description": "Unofficial ProtonMail Desktop App",
-  "version": "4.12.0",
+  "version": "4.12.1",
   "author": "Vladimir Yakovlev <desktop-app@protonmail.ch>",
   "license": "MIT",
   "homepage": "https://github.com/vladimiry/ElectronMail",
diff --git a/patches/protonmail/proton-mail.patch b/patches/protonmail/proton-mail.patch
index 6f91d5a92..7d9956851 100644
--- a/patches/protonmail/proton-mail.patch
+++ b/patches/protonmail/proton-mail.patch
@@ -35,3 +35,16 @@ index 13ba576..419e6be 100644
          >
              <Label htmlFor="login">{c('Label').t`Username or ProtonMail address`}</Label>
              <div className="mb1">
+diff --git a/src/app/containers/mailbox/MailboxContainer.tsx b/src/app/containers/mailbox/MailboxContainer.tsx
+index 3f222f7..98e9cfe 100644
+--- a/src/app/containers/mailbox/MailboxContainer.tsx
++++ b/src/app/containers/mailbox/MailboxContainer.tsx
+@@ -200,7 +200,7 @@ const MailboxContainer = ({
+     );
+
+     return (
+-        <div ref={elementRef} tabIndex={-1} className="flex-item-fluid flex flex-column flex-nowrap no-outline">
++        <div ref={elementRef} tabIndex={-1} className="flex-item-fluid flex flex-column flex-nowrap no-outline electron-mail-mailbox-container-component">
+             {showToolbar && (
+                 <Toolbar
+                     labelID={labelID}