Apple Watch Series 3 and iPhone Xs calendar syncing issues

Anyone experiencing this and find a fix?

My Apple Watch Series 3 loses sync with some of my calendars at times. All iCloud calendars. All up-to-date iOS and WatchOS versions.

To fix it I click the Reset Data option in the Watch app on the iPhone.

Anyone else experiencing this first world (and frustrating) problem?

I see it every so often and tap that same reset data button. Very frustrating.

This morning I rebooted the watch and it corrected itself. For now…?