Whiteboard deleted but still showing in list

So I created a whiteboard yesterday via Logseq desktop for macOS that immediately showed a created date of 53 years ago. I’ve selected it and clicked “DELETE” but it’s still there. I’ve checked the files on my hard drive and there’s corresponding file. I also use the beta sync and interestingly enough, its not showing up on my iPhone. I just noticed this.

I also just realised that I my graph is sitting in my iCloud folder. Could that cause a problem? As I mentioned, I’m using beta sync, not iCloud to sync to separate devices.

Thanks in advance!