diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index e9258903b..0d53cdde8 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -41,4 +41,4 @@ jobs:
         run: composer i
 
       - name: Run coding standards check
-        run: composer run psalm
+        run: composer run psalm:ci
diff --git a/composer.json b/composer.json
index bbd7de96b..7ac364f5b 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
 		"cs:check": "php-cs-fixer fix --dry-run --diff",
 		"cs:fix": "php-cs-fixer fix",
 		"psalm": "psalm --threads=$(nproc) --no-cache",
+		"psalm:ci": "psalm --threads=1 --no-cache",
 		"psalm:update-baseline": "psalm --threads=$(nproc) --no-cache --update-baseline",
 		"psalm:fix": "psalm --no-cache --alter --issues=InvalidReturnType,InvalidNullableReturnType,MissingParamType,InvalidFalsableReturnType",
 		"test:unit": "phpunit -c tests/phpunit.xml",
diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index f21e66595..70ad302d2 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -47,7 +47,9 @@
 use OCP\Files\Folder;
 use OCP\Files\IMimeTypeLoader;
 use OCP\Files\IRootFolder;
+use OCP\Files\Mount\IMountManager;
 use OCP\Files\NotFoundException;
+use OCP\Files\Storage\IStorageFactory;
 use OCP\Group\Events\GroupDeletedEvent;
 use OCP\IAppConfig;
 use OCP\ICacheFactory;
@@ -131,6 +133,8 @@ public function register(IRegistrationContext $context): void {
 				$c->get(LoggerInterface::class),
 				$c->get(IUserManager::class),
 				$c->get(IUserSession::class),
+				$c->get(IMountManager::class),
+				$c->get(IStorageFactory::class),
 			);
 			$hasVersionApp = interface_exists(\OCA\Files_Versions\Versions\IVersionBackend::class);
 			if ($hasVersionApp) {
diff --git a/lib/Mount/GroupFolderStorage.php b/lib/Mount/GroupFolderStorage.php
index c8ca119fb..5ab28bb6f 100644
--- a/lib/Mount/GroupFolderStorage.php
+++ b/lib/Mount/GroupFolderStorage.php
@@ -51,6 +51,10 @@ public function getOwner(string $path): string|false {
 		return false;
 	}
 
+	public function getUser(): ?IUser {
+		return $this->mountOwner;
+	}
+
 	/**
 	 * @inheritDoc
 	 */
diff --git a/lib/Mount/MountProvider.php b/lib/Mount/MountProvider.php
index f5bc74acb..daa3ee1c4 100644
--- a/lib/Mount/MountProvider.php
+++ b/lib/Mount/MountProvider.php
@@ -83,7 +83,7 @@ public function getMountsForUser(IUser $user, IStorageFactory $loader): array {
 		$aclManager = $this->aclManagerFactory->getACLManager($user, $this->getRootStorageId());
 		$rootRules = $aclManager->getRelevantRulesForPath($aclRootPaths);
 
-		return array_merge(...array_filter(array_map(function (array $folder) use ($user, $loader, $conflicts, $aclManager, $rootRules): ?array {
+		return array_filter(array_map(function (array $folder) use ($user, $loader, $conflicts, $aclManager, $rootRules): ?IMountPoint {
 			// check for existing files in the user home and rename them if needed
 			$originalFolderName = $folder['mount_point'];
 			if (in_array($originalFolderName, $conflicts)) {
@@ -102,7 +102,7 @@ public function getMountsForUser(IUser $user, IStorageFactory $loader): array {
 				$userStorage->getPropagator()->propagateChange("files/$folderName", time());
 			}
 
-			$mount = $this->getMount(
+			return $this->getMount(
 				$folder['folder_id'],
 				'/' . $user->getUID() . '/files/' . $folder['mount_point'],
 				$folder['permissions'],
@@ -114,23 +114,7 @@ public function getMountsForUser(IUser $user, IStorageFactory $loader): array {
 				$aclManager,
 				$rootRules
 			);
-			if (!$mount) {
-				return null;
-			}
-			$trashMount = $this->getTrashMount(
-				$folder['folder_id'],
-				'/' . $user->getUID() . '/files_trashbin/groupfolders/' . $folder['folder_id'],
-				$folder['quota'],
-				$loader,
-				$user
-			);
-
-			return [
-				$mount,
-				$trashMount,
-			];
-
-		}, $folders)));
+		}, $folders));
 	}
 
 	private function getCurrentUID(): ?string {
@@ -225,6 +209,7 @@ public function getTrashMount(
 		int $quota,
 		IStorageFactory $loader,
 		IUser $user,
+		?ICacheEntry $cacheEntry = null,
 	): IMountPoint {
 
 		$storage = $this->getRootFolder()->getStorage();
@@ -233,7 +218,7 @@ public function getTrashMount(
 
 		$trashPath = $this->getRootFolder()->getInternalPath() . '/trash/' . $id;
 
-		$trashStorage = $this->getGroupFolderStorage($id, $storage, $user, $trashPath, $quota, null);
+		$trashStorage = $this->getGroupFolderStorage($id, $storage, $user, $trashPath, $quota, $cacheEntry);
 
 		return new GroupMountPoint(
 			$id,
diff --git a/lib/Trash/TrashBackend.php b/lib/Trash/TrashBackend.php
index 1d5090367..c0e912a79 100644
--- a/lib/Trash/TrashBackend.php
+++ b/lib/Trash/TrashBackend.php
@@ -19,13 +19,16 @@
 use OCA\GroupFolders\Mount\MountProvider;
 use OCA\GroupFolders\Versions\VersionsBackend;
 use OCP\Constants;
+use OCP\Files\FileInfo;
 use OCP\Files\Folder;
 use OCP\Files\IRootFolder;
+use OCP\Files\Mount\IMountManager;
 use OCP\Files\Node;
 use OCP\Files\NotFoundException;
 use OCP\Files\NotPermittedException;
 use OCP\Files\Storage\ISharedStorage;
 use OCP\Files\Storage\IStorage;
+use OCP\Files\Storage\IStorageFactory;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\IUserSession;
@@ -47,6 +50,8 @@ public function __construct(
 		private LoggerInterface $logger,
 		private IUserManager $userManager,
 		private IUserSession $userSession,
+		private IMountManager $mountManager,
+		private IStorageFactory $storageFactory,
 	) {
 	}
 
@@ -235,16 +240,17 @@ public function removeItem(ITrashItem $item): void {
 
 	public function moveToTrash(IStorage $storage, string $internalPath): bool {
 		if ($storage->instanceOfStorage(GroupFolderStorage::class) && $storage->isDeletable($internalPath)) {
+			/** @var GroupFolderStorage $storage */
 			$name = basename($internalPath);
 			$fileEntry = $storage->getCache()->get($internalPath);
 			$folderId = $storage->getFolderId();
 			$user = $this->userSession->getUser();
 
-			// ensure the folder exists
-			$this->getTrashFolder($folderId);
+			$owner = $storage->getUser();
 
-			$owner = $storage->getOwner($internalPath);
-			$trashFolder = $this->rootFolder->get('/' . $owner . '/files_trashbin/groupfolders/' . $folderId);
+			$this->setupTrashFolder($folderId, $owner);
+
+			$trashFolder = $this->rootFolder->get('/' . $owner->getUID() . '/files_trashbin/groupfolders/' . $folderId);
 			$trashStorage = $trashFolder->getStorage();
 			$time = time();
 			$trashName = $name . '.d' . $time;
@@ -371,7 +377,22 @@ private function getTrashRoot(): Folder {
 		}
 	}
 
-	private function getTrashFolder(int $folderId): Folder {
+	private function setupTrashFolder(int $folderId, ?IUser $user = null): Folder {
+		if ($user) {
+			$mountPoint = '/' . $user->getUID() . '/files_trashbin/groupfolders/' . $folderId;
+			$mount = $this->mountManager->find($mountPoint);
+			if ($mount->getMountPoint() !== $mountPoint) {
+				$trashMount = $this->mountProvider->getTrashMount(
+					$folderId,
+					$mountPoint,
+					FileInfo::SPACE_UNLIMITED,
+					$this->storageFactory,
+					$user,
+				);
+				$this->mountManager->addMount($trashMount);
+			}
+		}
+
 		try {
 			/** @var Folder $folder */
 			$folder = $this->appFolder->get('trash/' . $folderId);
@@ -418,7 +439,7 @@ private function getTrashForFolders(IUser $user, array $folders): array {
 			$mountPoint = $folder['mount_point'];
 
 			// ensure the trash folder exists
-			$this->getTrashFolder($folderId);
+			$this->setupTrashFolder($folderId, $user);
 
 			$trashFolder = $this->rootFolder->get('/' . $user->getUID() . '/files_trashbin/groupfolders/' . $folderId);
 			$content = $trashFolder->getDirectoryListing();
@@ -513,7 +534,7 @@ public function getTrashNodeById(IUser $user, int $fileId): ?Node {
 	}
 
 	public function cleanTrashFolder(int $folderid): void {
-		$trashFolder = $this->getTrashFolder($folderid);
+		$trashFolder = $this->setupTrashFolder($folderid);
 
 		foreach ($trashFolder->getDirectoryListing() as $node) {
 			$node->delete();
@@ -532,7 +553,7 @@ public function expire(Expiration $expiration): array {
 
 			// calculate size of trash items
 			$sizeInTrash = 0;
-			$trashFolder = $this->getTrashFolder($folderId);
+			$trashFolder = $this->setupTrashFolder($folderId);
 			$nodes = []; // cache
 			foreach ($trashItems as $groupTrashItem) {
 				$nodeName = $groupTrashItem['name'] . '.d' . $groupTrashItem['deleted_time'];
@@ -593,7 +614,7 @@ private function cleanupDeletedFoldersTrash(array $existingFolders): void {
 				$folderId = (int)$folderId;
 				if (!isset($existingFolders[$folderId])) {
 					$this->cleanTrashFolder($folderId);
-					$this->getTrashFolder($folderId)->delete();
+					$this->setupTrashFolder($folderId)->delete();
 				}
 			}
 		}