Normally it should be done without opening Reminders app. But once in awhile, if it doesn't sync, opening Reminders app will make it start the process.
It seems like something under the hood might be setting the behavior but normally it should work without it opened. Thanks!
Please do not sweep this under the rug. After upgrading to IOS 18 and MacOS 15, this behavior is persistent. Automatic sync fails again and again. Keeping the Reminders app open seems to be a workaround.
Hi @arnstein, thanks for the feedback. This is an issue from macOS and after opening Reminders app, normally it gets triggered afterwards without opening it again. I'll keep an eye on it. Thanks!