Merge branch 'v3' of https://github.com/craftcms/cms into develop

# Conflicts:
#	CHANGELOG.md
#	src/config/app.php

CHANGELOG.md

@@ -7,6 +7,7 @@
 - `craft\helpers\Json::encode()` no longer sets the `JSON_UNESCAPED_SLASHES` flag by default.
 - Fixed a JavaScript error that occurred when resolving an asset move conflict. ([#12920](https://github.com/craftcms/cms/issues/12920))
 - Fixed a bug where volume subfolders were being shown when viewing soft-deleted assets. ([#12927](https://github.com/craftcms/cms/issues/12927))
+- Fixed a bug where structure data was getting deleted when running garbage collection on PostgreSQL. ([#12925](https://github.com/craftcms/cms/issues/12925))
 - Fixed an error that could occur when rebuilding the project config, if there were any custom source definitions for element types that weren’t Composer-installed. ([#12881](https://github.com/craftcms/cms/issues/12881))
 - Fixed an XSS vulnerability.
 

src/services/Gc.php

@@ -498,7 +498,8 @@ private function _deleteOrphanedStructureElements(): void
 DELETE FROM $structureElementsTable
 USING $structureElementsTable [[se]]
 LEFT JOIN $elementsTable [[e]] ON [[e.id]] = [[se.elementId]]
-WHERE [[se.elementId]] IS NOT NULL AND [[e.id]] IS NULL
+WHERE $structureElementsTable.[[id]] = [[se.id]] AND
+  [[se.elementId]] IS NOT NULL AND [[e.id]] IS NULL
 SQL;
         }