New Notes sections expand on their own accord

Hi community,

I've just upgraded to Sequoia (15.0.1 (24A348)), and one of the first things that caught my eye was the ability to collapse sections in the Notes app. For me, this is a great new feature which I immediately started using.

Unfortunately...it doesn't work.

Once I've collapsed the sections I don't need to worry about for a while, within, say, a minute they've all expanded again. All of them. I have searched and found one post reporting the same problem but he/she says it's due to spelling errors in those sections.

That shouldn't make a difference, however, even with no spelling errors my sections are still automatically expanding without (obvious) reason.

Anyone else having the same problem? Anyone else have any ideas?

Thanks in advance,

Mark.