Fix the upcast of `[attach]`

See https://www.woltlab.com/community/thread/310357/

diff --git a/wcfsetup/install/files/lib/system/html/metacode/upcast/AttachMetacodeUpcast.class.php b/wcfsetup/install/files/lib/system/html/metacode/upcast/AttachMetacodeUpcast.class.php
index b48b98ab1c724a2790343935a1d8134438a50a32..93077cf3ed6de405d67b4e57743257874e172eb2 100644 (file)
--- a/wcfsetup/install/files/lib/system/html/metacode/upcast/AttachMetacodeUpcast.class.php
+++ b/wcfsetup/install/files/lib/system/html/metacode/upcast/AttachMetacodeUpcast.class.php
@@ -59,10 +59,10 @@ final class AttachMetacodeUpcast extends AbstractImageMetacodeUpcast
 
     private function isThumbnailWidth(Attachment $attachment, string|bool|int $width): bool
     {
-        if ($width === 'auto' || $width === false) {
+        if ($width === 'auto' || $width === false || $width === 'false') {
             return false;
         }
-        if ($width === true || $width === 0) {
+        if ($width === true || $width === 'true' || $width === 0) {
             return true;
         }
         return !($width > $attachment->thumbnailWidth);