I always try to avoid to update fields with NOW() type of expression to update the physical fields.
It is possible that you may set the fields to time column. If you are quick enough to update row value and do transaction to change the data within the “same min” then the action is to return the same value.
Then it will not trigger the update for the rest of the column for the rest of the fields on the same row.
Better to set your action to trigger to update the row values (to recal the app formula) by triggering the update the column value by incrementing number.
What i do always to set the number type column, then set the action to increment number for that fields by action, just increent by 1 by action. Then the rest of fieds value would be recalc regardless of the type of actions.