Odd Calendar issue

I have only used this today since updating to 2023.2 so not sure if this was an issue before today unfortunately.

I have an Apple calendar for which I have pulled the iCloud details though in the normal fashion (as outlined below)

calendar:

It pulls through this month just fine…but when I skip forward to March it shows nothing but with this error

I get the same for April, but then May and all future months show with zero errors. This is the case whether I am on month view but if I switch to week view, I can view up till the last week in March before the error crops up again…

I can see the troublesome months in Apple’s calendar without issue so wondering what the issue could be. Are they any limitations to what the calendar can show with regards to calendar entries created in Apple calendars as I do have a holiday in this calendar that starts on 31st March and ends on 14th April…if I view it on daily calendar it displays without issue

TIA

Update:

And now, after changing no calendar entry details but going through in day view for the period, it seems to be working…very odd…is this a bug of some sort