I am on Odoo v15

In the replenishment view, I want to be able to use the "reorder" button, that takes into account a forecasted amount ("qty_forecast"), to automatically generate Purchase/Manufacturing Orders. The problem I am having is that the forecasted quantity does not seem to be calculating correctly.

For example, I have a motor that is a storable & purchasable product and I currently have 5 on hand. According to my replenishment view, there are 0 incoming (no active or draft PO's) and 1 outgoing (on a manufacturing order to make another part). The "virtual_available" field shows 4, which is correct. The "qty_forecast" field shows 5, which is incorrect. Because of this, the reorder button will either not be there (if the qty_forecast is not below the min value), or the reorder button will order the wrong amount of this product.

I did want to add that qty_forecast is taking into account the incoming amount of the product. So for example, with the same motor, if I put out a purchase order for one of these motors, the "incoming" amount would be 1, which is being added to the forecasted amount correctly.

This is happening on a variety of products, both purchased and manufactured. Does qty_forecast not take reserved parts on manufacturing orders into account? Is there a configuration change I could make to solve this or would this be a customization?

Any help is appreciated!