When scrolling through previous months, the calendar 'jumps' back to today [intermittent]

[AaronXQA]

1. Open calendar from taskbar
2. Click the ^ arrow to navigate to previous month
3. After a second, the app jumps back to the current month

[rjgoif]

The issue can sometimes be triggered by first using the "zoom out" navigator by clicking on the verbose date (zooming out to the months of the year, then the years), then clicking back in.

Restarting the app stops the bug until the zoom out is used again.