UPDATE I discovered the problem. I had changed the format of dates in preferences for an Alfred snippet I created (Alfred uses the preferences formats for date placeholders). When I changed the date formats back to default, everything worked properly in Reminders. There is either a bug between the interaction of date formats if changed and Reminders or I had a mistake in my format syntax. I’ll experiment but the issue is resolved for now by returning to default date formats.
I think I found a Reminders bug in the latest release of Monterey. The due date showing up on the left panel is inserting an extra number. Every task with a date as an extra–but different–number. The extra number does not show up in the information/details panel. This bug does not appear in iOS/iPadOS. Below is a screenshot.
Is anyone else seeing this bug in Reminders in the latest version of Monterey?
I’ve rebooted the MBP but that does not resolve the issue.