Calendar Dock Icon Problem

Here's an interesting problem I have.

The icon that resides in the dock for the Calendar application messes up with displaying the month and the date every so often. It works properly after I restart my computer, or log out and log back in into my account. It errors after an unknown amount of time, and I have not determined any specific action by me that causes it to go wonky. I have observed it continue the same type of error when switching dates at midnight. It'll go from displaying one messed up day to the next messed up day instantaneously. A compilation of screenshots is included.

The error remains even when I open the application. I have not messed with the coding of the app at all ever, or of the operating system in any significant way in a long time.

It's been going on for a couple weeks for me. Any ideas what could have caused this? Also, how can I fix it?




MBP Mac OS Details: And yes I have the public release beta installed. I've disenrolled from that release program, though. I don't think it has anything to do with betas though, but I may be wrong. I'm more looking for specific root causes and fixes, than something overarching like this.