Hello

Unfortunately, there is no way to change the 'See more' behaviour in Timeline card. It's not a menu item and therefore cannot be managed in Studio builder.

But as I see you have non-formated text in the card. It looks like that you've enabled 'Brief' cards in Studio -> Timeline -> Settings -> Card -> 'Enable brief cards'. If you disable it the card's content will look more like on view content page.

This is so great, I never knew this was available. Thanks @Anton L