I asked CLAUDE AI and here is its response. (Use at your own risk)
ME: Looking at the release notes for 9652. Fixed: An issue where some attachments are missing "Save link as" option in the context menu. ** they likely broke it trying to fix this. In Smartermail there is no download usage tracking.
CLAUDE: That confirms it perfectly. The "Save link as" fix almost certainly involved adding ng-click="downloadAttachment(item)" to programmatically handle the download, but doing so caused the browser's native anchor behavior (ng-href + download attribute) to also fire — resulting in the double download.
Removing ng-click reverts that unintended side effect while keeping the anchor's native download behavior, which already handles "Save link as" correctly anyway since the download attribute is still there.
The community fix is solid. Apply it with confidence.