There is an error in the handling of Accrued Dividends.
In this model:
https://www.portfolio123.com/port_summary.jsp?portid=1493908
an Accrued Dividend of $56.52 payable on 7/31/19 was incorrectly credited to Cash on 6/28/19. However, in the Accrued Dividend column it is still correctly shown after 6/28/19.
The effect is that Cash is too high by an amount of $56.52.