diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index b80c83881..9c7aab54a 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -813,12 +813,14 @@ class Profile
 
 	/**
 	 * Set the visitor cookies (see remote_user()) for signed HTTP requests
-	 (
+	 *
+	 * @param array $server The content of the $_SERVER superglobal
 	 * @return array Visitor contact array
+	 * @throws InternalServerErrorException
 	 */
-	public static function addVisitorCookieForHTTPSigner(): array
+	public static function addVisitorCookieForHTTPSigner(array $server): array
 	{
-		$requester = HTTPSignature::getSigner('', $_SERVER);
+		$requester = HTTPSignature::getSigner('', $server);
 		if (empty($requester)) {
 			return [];
 		}
diff --git a/src/Module/Photo.php b/src/Module/Photo.php
index c8e0656d2..be2408edf 100644
--- a/src/Module/Photo.php
+++ b/src/Module/Photo.php
@@ -77,7 +77,7 @@ class Photo extends BaseApi
 			throw new NotModifiedException();
 		}
 
-		Profile::addVisitorCookieForHTTPSigner();
+		Profile::addVisitorCookieForHTTPSigner($this->server);
 
 		$customsize = 0;
 		$square_resize = true;
diff --git a/view/global.css b/view/global.css
index 054ac0515..6bee34b8b 100644
--- a/view/global.css
+++ b/view/global.css
@@ -697,6 +697,7 @@ audio {
  */
 .imagegrid-row figure {
 	position: relative;
+	background: center / auto rgba(0, 0, 0, 0.05) url(/images/icons/image.png) no-repeat;
 }
 .imagegrid-row figure img{
 	position: absolute;
diff --git a/view/theme/frio/scheme/black.css b/view/theme/frio/scheme/black.css
index debf9d99b..21a40f1c7 100644
--- a/view/theme/frio/scheme/black.css
+++ b/view/theme/frio/scheme/black.css
@@ -394,3 +394,7 @@ input[type="text"].tt-input {
 textarea#profile-jot-text:focus + #preview_profile-jot-text, textarea.comment-edit-text:focus + .comment-edit-form .preview {
 	border-color: $link_color;
 }
+
+.imagegrid-row figure {
+	background-color: rgba(255, 255, 255, 0.15);
+}
diff --git a/view/theme/frio/scheme/dark.css b/view/theme/frio/scheme/dark.css
index add36fff1..29b2782da 100644
--- a/view/theme/frio/scheme/dark.css
+++ b/view/theme/frio/scheme/dark.css
@@ -354,3 +354,7 @@ input[type="text"].tt-input {
 textarea#profile-jot-text:focus + #preview_profile-jot-text, textarea.comment-edit-text:focus + .comment-edit-form .preview {
 	border-color: $link_color;
 }
+
+.imagegrid-row figure {
+	background-color: rgba(255, 255, 255, 0.05);
+}