Hi, this problem happens when the day notes in calendar tab are set to display "current time". Every time the clock updates (every minute, or second if you checked the second box), the scrollbar in this pane is sent to the top of the pane.
If you have a day note longer (higher) than the pane, you can't read the end of the note because the scrollbar keeps going at the top of the note.
You can work around it by disabling "show current time" in the prefs, but this is definitely a bug. If this (displaying the current time) is the default, please disable it until this is fixed. thanks