Further to this bug issue on the Legacy Holdings Page switching between Showing Open Positions and Showing Open & Closed Positions does nothing.
On the New Beta Holdings page selecting Include Closed Positions does work but it doesn’t effected the Average Purchase Price, which it should if Include Closed Positions is on or off.
Hopefully a feature like choosing FIFO will be added so that Average Purchase Price calculations can be repaired. This will also need to include re-invested dividends for mutual funds and similar investments.