Are you filtering for effective stack sizes?
If so, have you re-imported your hands into a new database?
The effective stack size mechanism was changed in v4.01.23 and you will need to re-import to populate the new data - existing databases will have been updated to the new structure but will not have any data in them for the effective stacks.
If that doesn't apply then please export your note definition and the history for the hand in question and attach them to a
Support Ticket so that we can see what is wrong. Post your ticket number here so that we can follow it up as quickly as possible.